Rob, I have a few documents in my oil resources folder that I still need to go through. Below is one excerpt from a 215 page Petro Can document that generally outlines the API Classifications. I have another similar manual from Shell that I haven't looked at yet. The correct lubes are out there, but the ones we want are more "specialized" than in the past. I will post any that I come up with too.
The second image (API descriptions) is from a Shell Lubricants Handbook.
Im not 100% sure, but it appears the API classes are more related to the application and type of service, and are independent of the additive package(s) that each manufacturer may include in each specific product.
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1953 M37 CDN
1953 M38A1 CDN
1967 M38A1 CDN2
Last edited by Wayne Hingley; 18-03-18 at 21:46.
Reason: add info and photo
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