alan c Posted March 20, 2015 Share Posted March 20, 2015 what is the general view on correct grade of oil to use in a VX. It is the Caterham 218 spec but actually delivers just under 200 bhp. Useage is nearly all road use. I have seen conflicting advice so asking BCThanks Link to comment Share on other sites More sharing options...
F355GTS Posted March 20, 2015 Share Posted March 20, 2015 Alan i've read in the past to avoid 5w an even 10w. I always ran my VX on Mobil 1 15w50 Link to comment Share on other sites More sharing options...
ECR Posted March 20, 2015 Share Posted March 20, 2015 Such a long time ago now, but I think the 15w oils were used on trackday cars mainly to minimise noisy tappets (or was it to minimise pressure loss ?) Either way I'm still using 15W 50 Mobil 1 Motorsport Link to comment Share on other sites More sharing options...
Paul McKenzie Posted March 20, 2015 Share Posted March 20, 2015 I think Roger's right especially if you're on hydraulic lifters. I use the Comma 5/50 full synth. nowadays but that's on solid tappets and mix of road and track. Link to comment Share on other sites More sharing options...
johnnyseven Posted March 20, 2015 Share Posted March 20, 2015 15/50 Mobil 1 Motorsport Link to comment Share on other sites More sharing options...
k.russell Posted March 20, 2015 Share Posted March 20, 2015 Use millers 10/60 in mine have used 10/40 in past, going to put millers 10/50 nano in next time I think. 200 bhp, hydraulic, dry sump, have approx 5 litres in. Link to comment Share on other sites More sharing options...
Mavic82 Posted March 20, 2015 Share Posted March 20, 2015 Castrol 10w40 magnatec. Link to comment Share on other sites More sharing options...
6speedmanual Posted March 21, 2015 Share Posted March 21, 2015 "I have seen conflicting advice so asking BC" - BC, the root of all harmonious, non-conflicting advice! :) Link to comment Share on other sites More sharing options...
Bio Posted March 21, 2015 Share Posted March 21, 2015 Hi AlanI have tried various grades of oil....The original GM spec was 10-40 semi synthetic, but for Caterham use with hydrulic lifters Mobil 15-50 (if available ) or now 10-60 fully synthetic.SBD recommend Millers 10-60 Link to comment Share on other sites More sharing options...
cskip Posted March 21, 2015 Share Posted March 21, 2015 As Bio says, I run mine on Millers CFS 10w60 Motorsport, as recommended by SBD. Link to comment Share on other sites More sharing options...
alan c Posted March 22, 2015 Author Share Posted March 22, 2015 Thanks all clear now will go with the Mobil 1 for now as that is what I have. Just concerned as I has seen the SBD site and had other different advice. Link to comment Share on other sites More sharing options...
Neil Felstead Posted March 23, 2015 Share Posted March 23, 2015 Bob Jones (BJ Racing engines) recommends 5W 40 Fully synthetic for XE engines. Link to comment Share on other sites More sharing options...
Lotus Boy Posted March 23, 2015 Share Posted March 23, 2015 I use 5w 40 Comma Synger G will no ill effects. When I last checked with Vauxhall they said their spec for the C20XE was 5w30 fully synthetic - different to what Bio has been told. Why isn't it simple??Agree with the others though for you, 15W 50 Mobil 1 Motorsport would probably be best. Link to comment Share on other sites More sharing options...
andy_h Posted March 23, 2015 Share Posted March 23, 2015 I also use 5w 40 Comma Synger G. Link to comment Share on other sites More sharing options...
alan c Posted March 23, 2015 Author Share Posted March 23, 2015 Thanks everyone Mobil 1 15w50 is now in the car. Also replaced the foam baffle, luckily I had some helping hands to put the baffle, gaskets etc back. Somehow I did this before on my own with the car jacked up at one end only - no idea how i did then it was hard enough with help. Link to comment Share on other sites More sharing options...
Paul Deslandes Posted March 26, 2015 Share Posted March 26, 2015 A tip for replacing the sump that I read a few years ago was to cut four 3 inch lengths of studding (M5? can't remember thread size) and screw them into the block sump screw holes at the four corners. You can then push the sump, gaskets and baffle upwards onto the studs so they remain correctly aligned and located while you insert the rest of the screws. Loosely spin nuts onto the studs to hold it all in place. Once it's all lined up and secure, remove the studs and replace with screws.You can get 1 metre lengths of studding from any of the sheds, B&Q, Wickes etc. Link to comment Share on other sites More sharing options...
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