Sam,

we'd run our 4 and 6 cyl Cummins and Cats when I worked for 24 hours, then work wanted us to switch to another to check the oil level and "rest them"..

Most of our mechanics thought it silly as long as the oil pressure stayed up (we checked them every 4 hrs minimum).

Hope that helps/

The desert is a true treasure for him who seeks refuge from men and the evil of men.
In it is contentment
In it is death and all you seek
(Quoted from "The Bleeding of the Stone" Ibrahim Al-Koni)

member of the cabal of dysfunctional squirrels?