Originally Posted by aeventyr60
What about the ratings? SE, CE, CD, BS,/. MIL SPEC etc. I can hardly find an oil that has the correct spec any more for the Perkins 4108. I think the modern Oil is fine, just wondered about these?
Check out my post above. It has a link to the service ratings of modern oils. The old oils like CD, which I used to use, have been replaced. CD and many of the old classifications are now obsolete, replaced by CL4, CJ4 and CH4.