Originally Posted by 4WD
Delvac Super … I think Delvac 1 is one of the best oils made … but to me unless you have a really good bypass filter system … and willing to run long … (or temperature limits) it's so much cheaper to run 15w40.
Plenty good one's running lots of diesels of all sizes …
(at work, all we run from 4 banger Toyota to 7k HP Cats) …
Nice, good to know! The ISB Cummins seems to gobble up 3 gallons of whatever you put in there, that's why I'm switching and sticking with 15W-40 conventional, maybe the T5 semi in winter.
Just doesn't get cold enough here for the 5W-40 synth stuff.
But man, you're right about the ESP. To me, it just smells like candy, almost worth the cost of admission just for my nose! Hahaha