motor oil??
https://www.dieselbombers.com/altern...l-running.html check this out and see if it helps answer your questions
they're all the same if they have the API and SAE stamps on them 
SAE 15W-40 and make sure its CJ-4 rated is what the manual recommends.
Rotella, Amsoil, Super-tech oil all meet those requirements

SAE 15W-40 and make sure its CJ-4 rated is what the manual recommends.
Rotella, Amsoil, Super-tech oil all meet those requirements



