Basic Diesel Lube Info

[ivymike]

Can anyone point me to a worthwhile reference, and/or provide a summary of the difference between CG-4, CH-4, CI-4 oils for diesels? I understand that there are different levels of ash, and that some are more and some are less tolerant to soot, but I'd like to have a little background on the chemistry and the physical mechanisms involved.

 

[ivymike]

(this isn't enough info)

http://api-ep.api.org/filelibrary/Guidechart2002.pdf

 

[25362]

Another link:

http://www.performanceoiltechnology.com/apiserviceclassifications.

htm

 

[ivymike]

isn't that essentially the same information, but with some self-hype and marketing mumbo-jumbo mixed in?