Phil Posted August 23, 2006 Share Posted August 23, 2006 As it says X/FLOW 1700 DD 1990 ROAD USE ONLY..SO FAR Link to comment Share on other sites More sharing options...
Irrelevant Posted August 23, 2006 Share Posted August 23, 2006 Whatever bike oil is recommended by the manufacturer/engine builder.....Not a good idea to use car oil. Infact, I know of one very highly modded BEC that blew up very soon after the owner swapped from semi-synth bike oil to Mobil1 Motorsport (having been advised not to use the Mobil1 as well). Could be purely coincidental but I doubt it as it was a pretty fresh engine which been fine for years on bike oil. Link to comment Share on other sites More sharing options...
DSL Posted August 24, 2006 Share Posted August 24, 2006 Kendall GT1 20-50w as recommended by Mistral Performance & used also by Brodie & Jez in their Busa engined cars. Link to comment Share on other sites More sharing options...
peterg Posted August 24, 2006 Share Posted August 24, 2006 I use Silkolene Comp 4 10w-40 in my GSXR1100 engined racecar Link to comment Share on other sites More sharing options...
Ferrino Posted August 24, 2006 Share Posted August 24, 2006 I use Redline synthetic oil, as comes highly recommended by many BEC owners. Yamaham @ Keevil Link to comment Share on other sites More sharing options...
Alexander Gurr Posted August 24, 2006 Share Posted August 24, 2006 Bike engine oil needs to be different because it is used in the wet plate clutch. Using car oil is a really bad idea. As Adam says, I would use the oil recommended by the bike manufacturer in the first place Link to comment Share on other sites More sharing options...
mikeg Posted August 24, 2006 Share Posted August 24, 2006 (Blackbird) I use Castrol R4 synthetic superbike oil, but if anyone can recommend something better the I'll try that 😬 😬 Link to comment Share on other sites More sharing options...
Mike Molloy Posted August 24, 2006 Share Posted August 24, 2006 Castrol GPS Semi-Synth. The advice I saw was not to use full synth on a 'bird engine for at least the first 8K miles. Link to comment Share on other sites More sharing options...
Phil Posted August 24, 2006 Author Share Posted August 24, 2006 Just wanted to know what you were all using and the reasons why? X/FLOW 1700 DD 1990 ROAD USE ONLY..SO FAR Link to comment Share on other sites More sharing options...
blade_runner Posted August 24, 2006 Share Posted August 24, 2006 Castrol R4 Superbike..... you get that lovly Castrol R smell when givin it full beans 😬 'Pinky Pics' here Link to comment Share on other sites More sharing options...
Lee Posted August 25, 2006 Share Posted August 25, 2006 Castrol something or other in the Fireblade - either GPS or R4, one is supposed to be slightly better for the clutch than the other. Checked back to an old post here - I'm using GPS! Link to comment Share on other sites More sharing options...
ruff seven Posted August 26, 2006 Share Posted August 26, 2006 I had a superbike mechanic working for me, and he saw a customers fireblade caterham with a new engine just covered 2000 miles had a clutch slip fault, he asked whot oil we used and I told him castrol r4, he said big mistake drain it and fill with catrol semi 10-40, it did however transform the clutch operation! Link to comment Share on other sites More sharing options...
blade_runner Posted August 26, 2006 Share Posted August 26, 2006 Another problem with using full synth is clutch drag rather than slip, silp is usually caused my incorrect adjustment, weak springs or a worn out clutch, wear as drag can be a complete nightmare when trying to change down due to the oil haveing too much suction between the plates . 'Pinky Pics' here Link to comment Share on other sites More sharing options...
Phil Posted August 26, 2006 Author Share Posted August 26, 2006 A mineral or a semi will have unwanted products in them and they are left as deposits such as varnishing which I would have thought make the clutch slip, or is it a case of the higher friction required over a fully synthetic to work properly? A fully synthetic will keep the system cleaner but will the lack of friction make the clutch slip? I do know that the 10w/40 SG spec recomended for most bikes is not as good a quality as the 10w/40 sold for cars, SJ spec. What is used in the race bikes and is it a similar wet clutch set up? X/FLOW 1700 DD 1990 ROAD USE ONLY..SO FAR Link to comment Share on other sites More sharing options...
ruff seven Posted August 27, 2006 Share Posted August 27, 2006 Er, 10-40 semi! Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now