rose5691 Posted April 10, 2011 Posted April 10, 2011 Just changed the oil from10/40 to 5/30. Would this cause the idle pressure to drop from 2.5 to just under 2? If not, any other suggestions as to why? Thanks, John. Quote
rose5691 Posted April 10, 2011 Author Posted April 10, 2011 Because I was told that 5/30 is the correct one. Quote
fatbaldbloke Posted April 10, 2011 Posted April 10, 2011 5/30 is the Ford recommended grade, however for spirited use fully synthetic 5/40 (i.e. Millers CFS 5w40) is ideal. I think it's quite reasonable for the drop in idle pressure to be compatible with using a slightly thinner grade oil and 2 bar hot idle is still fine, indeed quite good. I wouldn't worry. Quote
fatbaldbloke Posted April 11, 2011 Posted April 11, 2011 More importantly keep your eye on the pressure when it's under some load. You would want to see over 3 bar, ideally around 4, at 3000 rpm hot. If this drops below 3 there may be an underlying problem. Quote
RedditchJay Posted April 11, 2011 Posted April 11, 2011 when I run mine out next i will take a better note of my oil pressure...... Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.