I need your helps guys. Especially molakule and Dr Haas. I would like specific information on the relationship between lubrication quality and motor oil condition, temperature mostly. If there is a useful SAE study , that would have information understandeable to the common man. I can interpret any engineering data also, so technical is not a problem. One of the projects I am working on, a turbo-diesel application , shows bulk oil temps up to 360F, local temps are probably higher. These are WOT towing runs lasting 10 minutes or more. I would love a way to properly predict what some of the local temps are, as tearing down the motor to probe it is not practical. Any information that can predict oil condition for this environment would be helpful also. Thanks in advance!