smckeown 1 Posted June 2, 2006 I have had 2 conflicting recommendations for oil in my 8v race engine, specifically: 10w60 (competitor in 205 challenge) 5w40 (oilman from opieoils) Anyone got any advice ? Share this post Link to post Share on other sites
Butler 0 Posted June 2, 2006 (edited) Are you running an Oil Cooler? I found recently with 10 40 oil, once it get really hot you loose oil pressure. On the track that is. I intend to try 10 60 next. Edited June 2, 2006 by Butler Share this post Link to post Share on other sites
smckeown 1 Posted June 2, 2006 yes i have a 13 row mocal oil cooler. Oilman did say that 5w40 is suitable under 120deg c the thing is he recommended Silkolene Pro S 15w-50 for my old mi16, so i have loads of that i nthe garage, i was hoping to re-use Share this post Link to post Share on other sites
Butler 0 Posted June 2, 2006 That was for an old engine though, no? I guess you would want, maybe, a thinner oil for a rebuilt engine, hence 5w40, but I guess with an oil cooler 40 is high enough. Share this post Link to post Share on other sites
Martin W 0 Posted June 2, 2006 yes i have a 13 row mocal oil cooler. Oilman did say that 5w40 is suitable under 120deg c the thing is he recommended Silkolene Pro S 15w-50 for my old mi16, so i have loads of that i nthe garage, i was hoping to re-use I know Pete F uses 15w50 and it is quite thick. I've replied on you PSOOC thread but if I had 15w50 going spare I would use that, maybe something tinner is required for running in though - I'd check that with and engine builder tho if I were you - Puma as he built it.. Share this post Link to post Share on other sites
smckeown 1 Posted June 2, 2006 yeah the running in oil is covered Share this post Link to post Share on other sites
