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to super or not to super


Dave W

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sorry....you lot are going to get sick of me asking dumb questions !

 

i noticed in another topic someone said that they were putting Super in their HPC - i have been using plain unleaded - should I be using Super?

 

('92 on Weber's)

 

Dave

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May've been me asking the question a month or so ago. I've a '91 HPC and was initially querying the advice I was given to run LRP(recommended by Caterham showroom!!??!!).

 

I was advised by the various friendly chappies on this forum to go with Super unleaded, although there's no discernable difference compared to std unleaded. I spoke to Jim Whiting about this last week, and he also recommended that you should run the highest octane you can.

 

Not a very technical answer, but hope it helps.

 

 

Matt Sullivan

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I think the theory is that LRP has the same Octane rating as Super and that it is more readily available than Super and may be cheaper.

 

The crap in LRP will do no good for a CAT conv. but if you haven't got one won't do any damage. Not sure about the detonation suppression that LRP has - this might be a good thing... Not sure whether it's mainly down to the lead or the octane rating.

 

Piers

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Octane rating is a measure of resistance to knock in calibrated test engines (RON or MON) http://www.motorcycle.com/mo/mcnuts/fuelron.html. The only thing you have to worry about is that the test engines are completely unlike modern engines. All our pump fuels are graded by RON, where MON is a much more relevant rating. There is nothing to say that two 97 RON fuels (LRP and Super) are to have the same MON rating, although they won't be much different.

 

The important thing to discover is whether the timing curve of the HPC was modified to cope with the Webers? The Webers are providing better cylinder filling than the standard fit plenum injection. How is the HPC ignition managed? Is it electronic? Is it 2D, 3D? (I think I know it isn't 3D).

 

Whatever, running a higher octane rating fuel will provide more of a safety margin before knock develops. For track use I don't think it would be sensible to contemplate anything else.

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On Ian Smith's (GRL Woking) advice I use ordinary premium with Valvemaster Plus, available from Halfords etc. I ran a couple of tanks of super through and then changed. Then I had the rolling road treatment for the timing and tuning and it is tops. 1990 Crossflow 1600 super sprint
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I use Super in my HPC ('94, QED mods for [reputed] 220bhp; let's call it 200bhp+).

 

Peter explains it far more admirably than I could (despite a degree in Automotive Engineering I really couldn't tell you much about MON), suffice it to say that with my HPC's high state of tune, and the fact that everywhere it goes, it does so with a damned good thrashing, then Super is worth the extra cost for the security it offers.

 

It may be my imagination, but there also seemed to be less hesitancy at lower revs with Super than Premium (which I used for my first week with the car).

 

 

Edited by - Matt Prior on 13 Oct 2000 15:15:20

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in answer to Peter's query re ignition, its electronic, and is the standard factory fit (Caterham that is) - not mucked around with at all....i would like to think that they supply it "mapped" to the Weber's.....

 

2d, 3d ? i thought they were types of computer graphics card ! 8-)

 

Dave

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I use LRP as it's the same RON as SUL but cheaper. Although my car is mapped for UL, it gives a bigger margin before detonation occurs. My map is pretty near the limit cos the crappy fuel in Italy caused detonation.

 

 

 

Alex Wong

www.alexwong.net

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Mr Chaos,

 

I doubt very much your car has a lambda probe. I've never tried octane boosters and I'm a little dubious about them. Best solution is to bring the timing back on the map (you need a laptop and the software) but if you do find you're stuck with crap petrol, keep the engine on cam try not to make it work hard (ie stay off full throttle) as the detonation gets worse when the engine is under load. Not ideal but it got me through my Italy trip.

 

 

 

Alex Wong

www.alexwong.net

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___ _/______ /_ ___

/ (_) (_)/

/`-'/o/ _______ o/`-'/

/ /// ( VDU7X ) \/ /

/___/--_________/--/___/

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Dave,

 

Assuming that your HPC has not been modified in any way whatsoever, you should have a compression ratio of 10.5:1 and should be OK on standard unleaded fuel.

 

We have however seen a couple of mysterious cases of detonation on HPC engines to your spec. My feeling is that the mapping is a little close to the limit and if this is coupled with slightly dodgy fuel (it does sometimes get on the market) this may explain the problem. Therefore it would be sensible to use super or LRP for hard driving or track use.

 

Without a catalytic converter, come the next fuel protest, you will have the luxury of being able to fill up with standard unleaded, super unleaded or LRP (but not diesel!)

 

2D mapping simply increases the ignition advance as the revs rise (for the pedantic, I am aware that it can also retard it, particularly at peak torque). This is simply an electronic way of doing what the distributor on a Supersprint engine does mechanically and it means that at any given rpm, say 4000, the ignition advance will always be the same figure, whatever the throttle position.

 

3D mapping adds an extra sensor, usually to measure throttle position. This position is taken into account when choosing an ignition advance figure. The practical result of this is, that at our given 4000rpm, the ignition advance will vary according to throttle position, typically showing considerably more advance at light throttle than full throttle. This allows more efficient use of fuel, better throttle response and improved driveability.

 

Finally, on the subject of octane boosting additives, we have a customer running a full race, steel Crossflow with a compression ratio of 11.8:1. He has been racing all year on 95 (yes 95) octane fuel with Millers CVL additive and there have been no detonation problems whatsoever. I fully accept that this does not properly constitute a scientific, controlled experiment, but it is at least a reasonably robust indication that this additive is effective as an octane booster.

 

CVL is specified for racing, but Millers also do a road product called VSP and this was tested at MIRA and shown to be effective. It might be wise to carry some in the car for emergency use.

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SOUTH A-Le

 

ASHFORD Marsh Diesels. Tel: 01233 613237/ 646143 AYLESBURY Relyon Motor Factors Ltd. Tel: 01296 432555 The Motorist Centre. Tel: 01296 433163 BARNSTAPLE Pat Williams Ltd. Tel: 01271 327442 BASILDON F.I.E.S. Tel: 01268 727672

BATH Bath Automotive Supplies. Tel: 01225 483882, London Road Motor Spares. Tel: 01225 311387,WRS Motor factors. Tel 01225 424221 BEDFORD The Motorist Centre. Tel: 01234 217272, The Motorist Centre Tel: 01234 262721, FLITWICK The Motorist Centre Tel 01525 718874 BERKHAMSTED The Motorist Centre. Tel: 01442 864361 BEXLEY HEATH Brampton Motors. Tel: 0181 303 6420

BISHOPS STORFORD BJ Ashpole Ltd Tel:01279 653211 BOURNEMOUTH Motorist Discount Centre. Tel: 01202 531065, Happy Motoring Tel: 01202 499658 BRACKNELL Nick Kernier Engineering. Tel: 01344 885222 BRENTFORD Camberfield Ltd. Tel: 0181 568 9643

BRIGHTON Cliffords of Brighton. Tel: 01273 609999 BRISTOL Roys Auto Supplies. Tel: 0117 977 7839 BROADSTONE Motorist Discount Centre. Tel: 01202 970769 BUCKINGHAM The Motorist Centre Tel:01280 813272

BURGESS HILL V.K.M Motor Accessories Ltd. Tel: 01444 241947 BUSHEY Bushey Auto Parts. Tel: 01923 235100 CALNE - WILTS. Cyril H. Thomas Ltd. Tel: 01249 814455 CANTERBURY Chaucer Motor Factors. Tel: 01227 454994

CHARD Chard Motor Parts Tel:01460 62614 CHEDDAR Cheddar Auto Parts. Tel: 01934 743682 CHELMSFORD Motormania of Chelmsford. Tel: 01245 262120 CHELTENHAM C.M.F. Cheltenham Motor Factors. Tel: 01242 238866

CHESHUNT Brookfield Motor Company. Tel: 01992 635772 CRAWLEY March & Sons. Tel: 01293 408724 CRAYFORD Leo Motor Spares. Tel: 01322 525431 CREWKERNE Motor Parts Tel: 01460 72999

CROYDON Croydon Motor Spares. Tel: 0181 681 8884/681 1125 First Diesel Injection (Croydon) Ltd. Tel: 0181 689 1806 Shirley Motor Spares. Tel: 0181 777 0861 Supreme Motor Spares. Tel: 0181 760 0355 DARTFORD Gearbox Motor Accessories. Tel: 01474 706330, East Hill Autos Tel: 01322 276 290 DEVIZES M.J.Hiscock Car Accessories. Tel: 01380 722236 DOVER Coastal Car Spares. Tel: 01304 216494

DUNSTABLE The Motorists Centre Tel: 01582 663075 EASTLEIGH Autostop. Tel: 01703 600989 EDGEWARE Broadfields Factors. Tel: 0181 952 7361/2, 0181 952 7645 EWELL Ruxley Auto Centre. Tel: 0181 393 0969

EXETER The Gearbox. Tel: 01392 51725/215074 FARNBOROUGH The Spares People. Tel: 01252 518222 FARNHAM Autobits. Tel: 01252 714993 FOLKSTONE Coastal Car Spares. Tel: 01303 242633

FORDING BRIDGE Perkins Motor Accessories. Tel: 01425 653475 FRIMLEY Frimley Motor Supplies. Tel: 01276 63645 GLOUCESTER (Gloucester Automotive Supplies). 53 St. Catherines Street Tel: 01452 302989 / 303332 7 Severn Road. Tel: 01452 419292/415555 GORING-BY-SEA Roaduser. Tel: 01903 503643

GOSPORT QA Motor Parts. Tel: 01705 510290 GRAYS Essex Diesel Injection Services. Tel: 01375 390143 HARPENDEN The Motorist Centre. Tel: 01582 767335 HARROW Monarch Electro Diesel Ltd. Tel: 0181 864 7446 01474

HASTINGS (Car Crazy.) Queens Rd Tel: 01424 445923, Kings Rd. Tel: 01424 HAYES Capital Car Factors. Tel: 0181 848 499 HEATHFIELD Heathfield Motoring Centre. Tel: 01435 863110 HEMEL HEMPSTEAD Relyon Motor Factors Ltd. Tel: 01442 69322

HENLEY-ON -THAMES Autolex. Tel: 01491 577720 HERNE BAY Sam Spares. Tel: 01227 360722 HIGH WYCOMBE Carbase (UK). Tel: 01494 533905 HODDESDON Wade Diesels. Tel: 01992 444020

HONITON The Gearbox. Tel: 01404 44888/9 HORNCHURCH Double 'D' Discount. Tel: 01708 442372 Roadster Tel: 01708 458314 HORSHAM Automate. Tel: 01403 264445 HOVE Automarine Diesel Services. Tel: 01273 415296

HYTHE Motorists Discount Centre Tel: 01703 841164 LANGPORT - ALLER Aller Service Station. Tel: 01458 250414

BOOKHAM A.C. Autos. Tel: 01372 457179 LEIGHTON BUZZARD The Motorist Centre. Tel: 01525 371708

LETCHWORTH The Motorist Centre. Tel: 01462 675843

KENT

 

HARTLEY The Gearbox Ltd. Tel: 01474 706330 HAYES Motique. Tel: 0181 462 3377 TENTERDEN Car Crazy. Tel:01580 766986 LONGFIELD M&R Autos Tel: 01474 708663

LONDON

 

BERMONDSEY Tower Bridge Diesels. Tel: 0171 2311488 CAMDEN TOWN Discount Motor Centre. Tel: 0171 380 0455 CATFORD Stanstead Autoparts Ltd. Tel: 0181 314 5400 CHINGFORD Ash Autoparts. Tel: 0181 524 0063

CHISWICK Chiswick Motor Spares. Tel: 0181 995 7497 COLINDALE Colindale Motor Parts & Accessories. Tel: 0181 2006336 Motorparts. Tel: 0181 200 9106 EALING Parts4cars. Tel: 0181 569 9860 ELTHAM J.Kent Motor Factors Ltd. Tel: 0181 850 2614

EAST HAM Eddlight Motor Spares. Tel: 0181 552 3856 FORESTGATE The Car Shop. Tel: 0181 472 4133 HAMPSTEAD Toys for Cars. Tel: 0171 794 6993 HORNSEY Turnpike Motor Co. Tel: 0181 348 1246

ISLEWORTH C.J. Diesel Injection. Tel: 0181 560 2297 KILBURN AMI Autos. Tel: 0171 624 0603 LEWISHAM Autac Motor Spares. Tel: 0181 852 2424 MANOR PARK Bhogals Motor Factors. Tel: 0181 478 4781

MILE END Ward Bros. Tel: 0181 980 2737 MOTTINGHAM Sebron Autostores. Tel: 0181 851 0218 NEW CROSS Sebron Autostores. Tel: 0181 691 6221 PALMERS GREEN Driving Force. Tel: 0181 888 0222

SUDBURY Autolink. Tel: 0181 904 3015 TOOTING BEC Super Spares. Tel: 0181 672 0767 WALTHAMSTOW V R Stolworthy Co. Ltd. Tel: 0181 520 2780 WILLESDEN Highway Autos Ltd. Tel: 0181 459 3871

SOUTH Le-Z

 

LUTON Union Street Autos. Tel: 01582 459150 LUTON-LEAGRAVE The Motorist Centre. Tel: 01582 595952 LUTON-SUNDON PARK The Motorists Centre. Tel: 01582 562681 LUTON-WIGMORE The Motorists Centre. Tel: 01582 729394

LYDNEY - GLOUCS Central Motor Factors. Tel: 01594 563499 MAIDSTONE 4U2 Fit. Tel: 01622 728765 MARGATE M. D. Automotive Parts & Accessories. Tel: 01843 298063 NEWBURY Motorist Discount Centre. Tel: 01635 42015

NEW ROMNEY Chase Tyres. Tel: 01797 366887 NEWTON ABBOT Motormart. Tel: 01626 63718 ORPINGTON S&P Trading Tel: 0850 817723 PLYMOUTH Desborough Motors. Tel: 01752 666297

POOLE Specialist Motor Components. Tel: 01202 744244 POTTERS BAR C.A.M. (Potters Bar) Ltd. Tel: 01707 642816 RADSTOCK Automania. Tel: 01761 435699 RAINHAM Arena Autostores. Tel: 01634 371385

READING Motorist Discount Centre. Tel: 01734 875592 REDHILL Frenches Autos. Tel: 01737 767002 REDRUTH Richards Bros. Tel: 01209 212234 RUISLIP The Motorist Centre. Tel: 01895 639145

RYE C.J. Diesel Injection. Tel: 01797 225682 SALISBURY Perkins Motor Accessories. Tel: 01722 336649 SIDCUP Leo Motor Spares. Tel: 0181 301 1769 SIDMOUTH The Gearbox. Tel: 01395 513356 / 513973

SITTINGBOURNE Allcar D.I.Y. Motorist Centre. Tel: 01795 421303 / 473737 SHEERNESS S.G.P Fowler. Tel: 01795 510643 SLOUGH Jagdev Auto Tel: 01628 666610, Reylen Motor Factors Ltd. Tel: 01753 570600 SOUTHAMPTON Govindas Auto. Tel: 01703 335505 / 331121

SHOLING Merryoak Auto Spares. Tel: 01703 449202 STAINES Autoparts Staines. Tel: 01784 452568 ST ALBANS The Motorist Centre. Tel: 01727 855144 STROUD Phil Neate. Tel: 01453 752186

SURREY-GUILDFORD Southern Automotive Dist. Ltd Tel: 01483 538038 SURREY-THORNTON HEATH Car Mate Tel: 0181 538038 SUSSEX-EAST Autoscreen. Tel: 01273 747174 SUSSEX-WEST Autoscreen. Tel: 01273 871717

SUTTON Langley Motor Spares. Tel: 0181 644 9894/ 0181 644 3737, Mobat Tel: 0181 6414718 SWINDON Motorist Discount Centre. Tel: 01793 523326 TORQUAY Auto Maintenance Ltd. Tel: 01803 293268 TRING The Motorist Centre. Tel: 01442 827543

TUNBRIDGE WELLS Lenco Motor Spares. Tel: 01892 546811 WATERLOOVILLE Design Award Ltd t/a Lovedean Car Parts. Tel: 01705 598155 WATFORD Autoparts. Tel: 01923 222698 / 225909 WELLINGTON- SOMERSET South St Motors. Tel: 01823 66044

WEST DRAYTON - MIDDLESEX The Motor Shop. Tel: 01895 444510 WEST NORWOOD Mobat Accessories Ltd. Tel: 0181 761 8060 WHITSTABLE Smart Car. Tel: 01227 771088 WINDSOR Motor Traveller. Tel: 01753 833442

WOODLEY-BERKS Autolex. Tel: 01734 694721 WOKING Auto Quest. Tel: 01483 764424 / 766269 WORTHING K.G. Spares. Tel: 01903 820321 YAPTON Specialist Auto Parts. Tel: 01243 553388

YEOVIL Roaduser Tel: 01935 423888

EAST

 

ALFORD Auto Extras Tel:- 01507 462781 ATTLEBOROUGH Attleborough Diesel Services. Tel: 01953 455431 BOURNE Bourne Motorists D.I.Y. Tel: 01778 425953 BOSTON -SUTTERTON Minor Classics. Tel: 01205 460 088

BRIGG Auto Extras Tel: 01652 657466 BURY ST. EDMUNDS. Speedy Motor Accessories Tel: 01284 705360 CAMBRIDGE Wilco Motor Spares Ltd. Mill Road Tel: 01223 414825 Wilco Motor Spares Ltd. Milton Road Tel: 01223 355113 CHELMSFORD Coleman Engineering. (Machinery) Ltd. Tel: 01371 876391

COLCHESTER G.K. Motor Factors. Tel: 01206 761939, Simon Short. Tel: 01206 574543, Wilco Motor Spares. Tel: 01206 764474 DISS Allmake Motor Parts Ltd. Tel: 01379 640782 DOWNHAM MARKET Malcolm R. Hipperson. Tel: 01366 324394

FELIXSTOWE Wilco Motor Spares. Tel: 01394 278884 GREAT YARMOUTH Wilco Motor Spares Ltd. Tel: 01493 853640 HORNCASTLE Dock Tyre Co. Ltd. Tel: 01507 522336 IPSWICH Wilco Motor Spares Ltd. Tel: 01473 747613

KINGS LYNN Wilco Motor Spares Ltd. Tel: 01553 765093 LOUTH Auto Extras Tel: 01507 603482 LOWESTOFT Auto Repairs. Tel: 01502 567472, Smarts Autoparts. Tel: 01502 589971 MARKET RASEN Auto Extras Tel: 01673 842337

NORWICH Smarts Autoparts. 165-175 Aylsham Road. Tel: 01603 409224, 207 Plumstead Road. Tel: 01603 39521, Wilco Motor Spares Ltd. Salthouse Road. Tel: 01603 35274, Reepham Road. Tel: 01603 787854 Dereham Road. Tel: 01603 660474

PETERBOROUGH Carparts. Tel: 01778 345350 Millfield Autos and Parts. Tel: 01733 312056, Eastfield Discount Autospares. Tel: 01733 347555 SANDY-BEDS. Cambridge Motorsport. Tel: 01767 677969 S****HORPE Frodingham Motor Spares. Tel: 01724 843072

SKEGNESS Car Care. Tel: 01754 767263 SLEAFORD Autostop. Tel: 01529 306087 THETFORD Speedy Motor Accessories. Tel: 01842 762238 WATTON Wilco Motor Spares Ltd. Tel: 01945 884126

WITHAM G.K. Motor Factors. Tel: 01376 500016 WISBECH - CAMBS Wilco Motor Spares Ltd. Tel: 01945 589392

Copyright © Millers Oils 1998. All rights reserved.

 

 

 

 

 

Edited by - L7SVN on 14 Oct 2000 17:39:09

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NORTH

 

ASHINGTON A.V.Taylor Ltd. Tel: 01670 819916 BARNSLEY Hoyland Motor Spares. Tel: 01226 744239 Action Stations Ltd. Tel: 01226 244689 J & L Auto Factors. Tel: 01226 350765 BAWTRY Stanwood Engineering Ltd. Tel: 01302 710661

BILLINGHAM Sewells Car Spares. Tel: 01642 552019 BLACKBURN Blackburn Brakes. Tel: 01254 581704 Kalus MOT Centre. Tel: 01254 674784 Windmill Service Station. Tel: 01254 813252 BLACKPOOL Engineering Techniques. Tel: 01253 890271

BLACKPOOL - LAYTON P.T.R.Motorspares. Tel: 01253 394115 BOLTON -HORWICH Westune Auto Services. Tel: 01204 697535 BOLTON - WEST HOUGHTON Engine Tekniks. Tel: 01942 840818 BOOTLE B&G Auto Spares (Liverpool) Ltd. Tel: 0151 933 9966 / 3030

BOROUGHBRIDGE Thrust Filling Station. Tel: 01423 323829 BURNLEY -PADIHAM Motorist World. Tel: 01282 775037 BRADFORD B.M.V. Tel: 01274 741739 Champion Motor Spares. Tel: 01274 668701 Wida Components Ltd. Tel: 01274 304499

BRIDLINGTON -BEMPTON S.T. Gowan. Tel: 01262 850383 BRIGHOUSE Eurocar. Tel: 01484 719919 BURY Alan Quine Ltd. Tel: 0161 796 5797 CARLISLE Whiteheads Motor Stores. Tel: 01228 511303

CARNFORTH Arnside Ford. Tel: 01524 761398 CHESTERFIELD A.F.Tuning. Tel: 01246 205430 CLECKHEATON Clemo Motors Ltd. Tel: 01274 872381 CLEETHORPES The Motashop. Tel: 01472 354834

CLITHEROE Lindley Pate Ltd. Tel: 01200 445555 COLNE S.K. Motorstore. Tel: 01282 866843 CONSETT Kwickpart. Tel: 01207 509247 CREWE ABP Motorsport. Tel: 01270 67177

CUMBRIA

BASSENTHWAITE Skiddaw Service Station. Tel: 01768 776218 CARK-IN-CARTMEL S.B.T. Tel: 01539 558863 EGREMONT Mill Garage. Tel: 01946 821795 KIRKBY STEPHEN Ian Carrick Diesel Services. Tel: 01768 372600

ULVERSTON Auto Diesel Technics. Tel: 01229 580037 WIGTON J. W Huntington & Son Ltd. Tel: 016973 45234

 

 

DARLINGTON Action Stations. Tel: 01977 620449 Darlington Kar Parts. Tel: 01325 357565 DONCASTER -ARMTHORPE D.M.A. Tel: 01302 834751 DONCASTER - CONISBROUGH Autofit Discount Spares. Tel: 01709 860606

DONCASTER -WHEATLEY D.M.A. Tel: 01302 342769 DONCASTER -WOODLANDS D.M.A. Tel: 01302 724249 DRIFFIELD J. Barratt & Son. Tel: 01377 217650 W. Horner & Son. Tel: 01377 254338

DUKINFIELD B.M.S. Car Spares Ltd Tel: 0161 3442477 ELLAND ECC Motor Factors. Tel: 01422 310111 Thrust Filling Station. Tel: 01422 372128 FILEY Four Oaks Services. Tel: 01723 513703

FLEETWOOD Tony Blundell Motor Engineers. Tel: 01253 876690/877690 Redmans Engine Centre. Tel: 01253 778969 GLOSSOP Autoden. Tel: 01457 856064 GOOLE D & P Motor Factors. Tel: 01405 764651

GOOLE-CARLTON Carlton Service Station. Tel: 01405 860982 GRIMSBY Auto Panels. Tel: 01472 356969 HALIFAX Car Spot. Tel: 01422 351678 HARTLEPOOL The Chequered Flag. Tel: 01429 268964

HEXHAM A.V. Taylor. Tel: 01434 606985 HEYWOOD Motorland. Tel: 01706 624477 HOLMFIRTH Hepworth Motor Co. Ltd. Tel: 01484 683172 HORBURY Connect Motor Spares. Tel: 01924 283333

HUDDERSFIELD Thrust Filling Station. Tel: 01484 422882 Walter Green (Motor Eng) Ltd. Tel: 01484 683134 Wood Auto Factors Ltd. Tel: 01484 422771 HUDDERSFIELD-FENAY BRIDGE Action Stations Ltd. Tel: 01484 429267

HUDDERSFIELD-GRANGE MOOR Rockwood Garage Tel: 01924 848654 HUDDERSFIELD-LEPTON Action Stations Ltd. Tel: 01484 604309 HULL Kildale Marine. Tel: 01482 227464 KEIGHLEY Chris Robson Manor Garage. Tel: 01535 605691

KIRKBY LONSDALE -BENTHAM Grove Hill Garage. Tel: 015242 61782 KNOTTINGLEY First Gear. Tel: 01977 677878 LANCASTER TB Turbos Ltd. Tel: 01524 67157

 

LEEDS G.B. Autocentre (Leeds) Ltd. Tel: 0113 249 2701 Thrust Filling Stations. Burley Road. Tel: 0113 245 0785 Swillington. Tel: 0113 232 0995 l R.U. Motoring Tel: 0113 2874444 LEEDS-YEADON J. Horner Economy Spares. Tel: 0113 250 4649

LEEK Leek Auto Spares. Tel: 01538 373615 LEIGH Dal's D K Motor Accessories. Tel: 01942 607698 Motorland. Tel: 01942 608746 LEIGH-LANCS R.S Diesels (North West). Tel: 01942 673340 LEYLAND Michael Theobald. Tel: 01772 622900 Motosave. Tel: 01772 622221

LIVERPOOL -MAGHULL P & G Motor Accessories. Tel: 0151 526 5208 LYTHAM Lytham Motor Spares. Tel: 01253 737882 MACCLESFIELD Ears Motorsport. Tel: 01625 422388 Thompsons of Macclesfield Ltd. Tel: 01625 425033

 

Manchester area

MANCHESTER Goldline Car Accessories. Tel: 0161 2051688 ASHTON-UNDER-LYNE Bharti Auto Spares. Tel: 0161 330 8691 DIDSBURY Minshell Spares. Tel: 0161 432 1710 FAILSWORTH TMS Autoparts. Tel: 0161 681 6827

PRESTWICH M & G International. Tel: 0161 773 9678 SALFORD Steves Super Spares. Tel: 0161 792 2950

 

 

North continued

MARPLE Autoden. Tel: 0161 427 6552 MERSEYSIDE -BIRKENHEAD M & G International. Tel: 0151 666 1666 MIDDLESBOROUGH Park Lane Garages (Middlesborough) Ltd. Tel: 01642 246031 MORECAMBE W.B. Car Spares. Tel: 01524 418838

NEWCASTLE-UNDER-LYME -MADELEY Motorways Autoparts. Tel: 01782 751273 NEWCASTLE-UPON-TYNE A.V.Taylor Ltd. 82-84 Shields Road Tel: 0191 265 0028 10 West Road Tel: 0191 273 2947 NORTH NEWBALD South Cave Tractors. Tel: 01430 827377

OLDHAM B.M.S. Car Spares Tel: 0161 6284900 OLDHAM-CHADDERTON Auto Equipe Ltd. Tel: 0161 633 5224 OSSETT Autogear. Tel: 01924 281824 Action Stations. Tel: 01924 279653 PRESTON -GARSTANG Car Care Tel: 01995 604871

PRESTON Browns of Grimsargh. Tel: 01722 652323 Deepdale Service Station. Tel: 01772 700721 E Pask Motor Accessories. Tel: 01772 726675 Moor Lane Garage. Tel: 01772 555020 REDCAR Oak Road Motor Factors. Tel: 01642 479305

RIPON Ripon Auto Electrics. Tel: 01765 602253 ROCHDALE Goldline Car Accessories. Tel: 01706 341570 Goldline Car Accessories. Tel: 01706 715455 Unique Ltd. Tel: 01706 47829 ROSSENDALE Colin Brennan Motor Service. Tel: 01706 223311

ROTHERHAM- MASBOROUGH Rotherham Rebore Services. Tel: 01709 557271 ROTHERHAM-THURCROFT Thurcroft Motor Spares. Tel: 01709 549181 ROTHERHAM-WATH UPON DEARNE Dearne Motor Spares Ltd. Tel: 01709 877922 SANDBACH Sandbach Motor Factors. Tel: 01270 762537/762649

S****HORPE D.M.A Tel: 01724 865537 SELBY Autoland Ltd. Tel: 01757 705501 SETTLE, N.YORKS Autosave Factors. Tel: 01729 823674

 

Sheffield area

BRADWELL Bastock Car Spares. Tel: 01433 621275 CHAPLETOWN Motor Spares. Tel: 0114 246 7560 DINNINGTON H M Wainwright Motor Centre. Tel: 01909 562625 /01909 567861

HILLSBOROUGH Motor Spares. Tel: 0114 234 1618 KILLAMARSH The New Chequered Flag. Tel: 0114 251 1211

 

 

North continued

SHIPLEY Thrust Filling Station. Tel: 01274 582283 SKIPTON Northern Auto Supplies. Tel: 01756 794363 SKIPTON-HELLIFIELD Hellifield Garages. Tel: 01729 850597 SOUTHPORT - CHURCHTOWN Highroad Automotive. Tel: 01704 24111

STALYBRIDGE P K Motor Spares. Tel: 0161 338 2487 STOCKPORT Castrees Auto Bar. Tel: 0161 430 7439 Heaton Mersey MOT Centre. Tel: 0161 432 7777 Motorland. Tel: 0161 474 0668 STOCKTON-ON-TEES M D Power Systems. Tel: 01642 617151

SUNDERLAND Action Stations Ltd. Tel: 0191 510 8551 THIRSK Auto-Tech. Tel: 01845 526192 Millgate Motor Accessories. Tel: 01845 522866 TYNE & WEAR -TYNEMOUTH Auto Silencers. Tel: 0191 2576447

WAKEFIELD Action Stations Ltd. Tel: 01924 290575 J.Wright & Sons. Tel: 01924 840336 Wood Auto Factors. Tel: 01924 291414 WAKEFIELD-OUTWOOD Pandel Autocentre. Tel: 01924 822660 WebmasterWarrington Diesels. Tel: 01925 31985

WHITBY Coates Marine. Tel: 01947 604486 WIGAN Motor Start. Tel: 01257 252335 Wigan Autospares. Tel: 01942 826554 -Ashton in Makerfield Park Motor Factors. Tel: 01942 721401

WIGAN-STANDISH Autosave (Standish) Tel: 01257 426566 WILMSLOW Motrax Motor Accessories. Tel: 01625 522551 WIRRAL -WEST KIRBY Checkpoint Motor Accessories. Tel: 0151 625 9061 WIRRAL-HIGHER BEBINGTON Checkpoint Motor Accessories Tel: 0151 608 4112

YORK -SHIPTON-BY-BENNINGBROUGH Quinns Commercials. Tel: 01904 470502

 

 

MIDLANDS

 

ALDRIDGE Kar Parts. Tel: 01922 52434 ASHBOURNE Sandybrook Garage. Tel: 01335 343840

BANBURY -WARDINGTON Francis T. Tuthill. Tel: 01295 750514

BELPER Belper Autotech. Tel: 01773 829992 J.P. Autospares. Tel: 01773 822795

 

BIDDULPH Motorways Autoparts. Tel: 01782 517766

BIRMINGHAM A.B Fletcher (AIMS). Tel: 0121 359 4241 Alum Auto Spares. Tel: 0121 327 2795 Carbits Ltd. Tel: 0121 622 2015 Midland Auto Spares. Tel: 0121 771 2701

 

Birmingham Area

BALSALL HEATH l Moseley Car Spares Tel: 0121 4404445

BILSTON Bilston Motor Spares. Tel: 01902 497598

BOURNEVILLE Citroën Spares. Tel: 0121 624 6060

CASTLE BROMWICH Castle Motor Spares. Tel: 0121 748 4848

 

ERDINGTON Automotive Parts & Equipment. Tel: 0121 382 2888

HALL GREEN Shaftmoor Spares & Repairs. Tel: 0121 778 2683

STETCHFORD Stetchford Auto Spares. Tel: 0121 783 2607

 

 

Midlands continued

BUCKINGHAM The Motorist Centre. Tel: 01280 813272

BRIDGNORTH Prince Auto Parts. Tel: 01746 762575

BURTON-ON-TRENT Premium Fuels (Midlands) Ltd. Tel: 01283 550416

COALVILLE C.P. Motor Factors. Tel: 01530 510203

 

COVENTRY Clearwater Oils. Tel: 01203 717488

DERBY Anglo Japanese Motor factors. Tel: 01332 381673 Derby Auto Accessories & Tuning. Tel: 01332 671493 Motor Parts. Tel: 01332 381130

DUDLEY Brierley Hill Motor Parts. Tel: 01384 263244

 

EVESHAM Autella Components. Tel: 01386 41313

FLITWICK The Motorist Centre. Tel: 01525 718874

HALESOWEN Complete Car Spares Tel: 0121 550 8848

HEANOR Romac Motor & Electrical Factors. Tel: 01773 533748

 

HEREFORD Partlands (AIMS) Ltd. Tel: 01432 276551

JACKSDALE - NOTTS. Bits and Pieces. Tel: 01773 605046

KEYWORTH Allwoods Discount Motor Stores. Tel: 0115 937 5280

KETTERING C. T Autoparts. Tel: 01536 416404

 

KIDDERMINSTER Autella Components. Tel: 01562 747602 Complete Car Spares. Tel: 01562 865871

KIDSGROVE Motorways Autoparts. Tel: 01782 782973

KIMBERLEY Romac Motor & Electrical Factors. Tel: 0115 9459651

 

KINGSWOOD Complete Car Spares Tel: 01384 279336

KNUTSFORD Autoden. Tel: 01565 654435

LEICESTER A.B. Butt Ltd. Tel: 0116 251 3344 Graham Goode Motors Ltd. Tel: 0116 283 1126 Hillside Garage. Tel: 0116 259 2479 Panjetani Motor Spares. Tel: 0116 263 0367

 

LINCOLN John Hannam. Tel: 01522 500333 , Allwoods Discount Motor Stores. Tel: 01522 569153

DODDINGTON Specialised Injection Service. Tel: 01522 691182

LONG EATON One Stop Car Services. Tel: 0115 972 1434

 

LOUGHBOROUGH Charnwood Motor Factors. Tel: 01509 238383 Promenade Autos. Tel: 01509 216767

LYE Complete Car Spares. Tel: 01384 897487

MANSFIELD―BLIDWORTH TR Enterprises. Tel: 01623 793807

MAPPERELY Auto-Tech. Tel: 0115 952 3487

 

MARKET HARBOROUGH A V P (All Vehicle Parts) Tel: 01858 431096 MARKET DRAYTON Midlands Auto Factors Tel: 01630 654555 MATLOCK P G Automotive. Tel: 01629 56661 MATLOCK-TANSLEY Derbyshire Turbo Services. Tel: 01629 580799

MATLOCK-BATH Adrian A. Peach & Son. Tel: 01629 582667 MELTON MOWBRAY Gearbox. Tel: 01664 62393, J H Services Melton Mowbray. Tel: 01664 812403 MILTON KEYNES Car Spares. Tel: 01908 564333 The Motorist Centre. Tel: 01908 373536 The Motorist Centre. Tel: 01908 505045

NEWARK Allwoods Discount Motor Stores. Tel: 01636 74281 NORTHAMPTON Sheltune Auto Spares. Tel: 01604 718718

 

 

Nottingham area

NOTTINGHAM Alphalube. Tel: 0115 959 9155 CENTRAL H.A.C Services. Tel: 0115 986 2617 Whites Garage. Tel: 0115 948 3003 ARNOLD Motabits. Tel: 0115 926 4674

BEESTON Alexon Automotive. Tel: 0115 943 6228, Glenns L.V. Ltd. Tel: 0115 927 2744 / 927 1393 CLIFTON Motabits. Tel: 0115 984 5438 HUCKNALL Granville Motors. Tel: 0115 963 2428

LANGLEY MILL Motapoint Ltd. Tel: 01733 764970 NETHERFIELD Motabits. Tel: 0115 987 0310 RUDDINGTON SPR Race Products. Tel: 01159 216958

 

Midlands continued

NUNEATON Round Tower Spares. Tel: 01203 329821 OXFORD Motorist Discount Centre. Cowley. Tel: 01865 778721 Motorist Discount Centre. Botley. Tel: 01865 247678 QUORN The Motorist Shop. Tel: 01509 412469

REDDITCH H.J.C Autoparts Ltd. Tel: 01527 892923 RIPLEY Romac Motor & Electrical Factors. Tel: 01773 745076 RUGELEY Motor Components (Uttoxeter) Ltd. Tel: 01889 586278 RUSHDEN T.M. Autoparts. Tel: 01933 58919

NORTHANTS C. T Autoparts. Tel: 01933 315011 Hansons Autocentre. Tel: 01933 55413 SHIPSTON ON STOUR Autella Components. Tel: 01608 62897 SHREWSBURY -DORRINGTON K.T.M. Service. Tel: 01743 718463 SMALLEY - DERBYS. Smalley Service Station. Tel: 01332 880217

SOUTHWELL Allwoods Discount Motor Stores. Tel: 01636 814421 STAFFORD Motor Components (Uttoxeter) Ltd. Tel: 01785 42284 STAPLEFORD Four Wheel Auto Factors. Tel: 0115 939 3446 STEVENAGE Bike Shop. Tel: 01438 317038

STOKE-ON-TRENT Blythe Motor Factors. Tel: 01782 396265 Continental Autos. Tel: 01782 214880 STONE Auto Care. Tel: 01785 819449 STOURPORT-ON-SEVERN Lloyds Garage. Tel: 01299 823615

SUTTON COLDFIELD Autac Motor Accessories. Tel: 0121 308 6011 TAMWORTH Wright and Hollyoak. Tel: 01827 285031 l Megaspares Tel: 01827 286882 TELFORD Car Parts Motor Factors. Tel: 01952 415666 T & M Parts & Tools. Tel: 01952 246507 TIPTON Raytex Autoparts. Tel: 0121 556 4910/4937

TOWCESTER The Motorist Centre. Tel: 01327 358900 Westell Motor Factors. Tel: 01327 52012 TWYCROSS Startin Tractors Ltd. Tel: 01827 880088 UTTOXETER Motor Components (Uttoxeter) Ltd. Tel: 01889 563441

WALSALL All Round Wheels Tel: 01922 685597 WINSFORD Autospares Tel: 01606 593004/592129 WIRKSWORTH Autospares. Tel: 01629 824593 WITNEY The Motorist Centre. Tel: 01993 703713

WOLVERHAMPTON P & C Pipeline Equipment Ltd. Tel: 01922 701922 Top Gear Motorsport. Tel: 01902 334429 WORCESTER Worcester Motor Factors. Tel: 01905 353182 WORKSOP William Arnold Smith Tel: 01909 721268

Copyright © Millers Oils 1998. All rights reserved.

 

 

 

 

 

 

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Jace,

 

Maybe this reply is a little late but your thoughts for your xflow (1995 1600 xflow SE is 3 tanks Super unleaded and then one leaded) are no longer appropriate unless you have access to real leaded 4*. The lead substitute in LRP does not provide the same 'memory' as lead and therefore must be used continually if it is to have an effect.

 

However, as exhaust valve regression is the issue here, and 4* wasn't what it used to be, it is probably as practical to just use unleaded and then slot in hardened valve seats when the exhaust valve seats wear (upto 20,000 miles depending on driving style).

 

I use LRP continually in my 1700 xflow without problem (unless I am in the New Forest and can get leaded in Beaulieu and Burley). For other locations of leaded look at Bayford Thrust or Leaded Petrol. I expect a cylinder head repair in about another 2 years - probably from valve guide wear - and will get hardened seats then.

 

Cheers,

 

Graham

 

 

 

 

Edited by - Graham Sewell on 17 Oct 2000 14:23:56

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