Quote:
Originally Posted by 300Drestoration
Ummmmmmm... "diesel rated" ???
I did a full change in early november and I put in "Mobile 1 10W-40 High Mileage" which seems to be a rather widely acclaimed oil for these vehicles...
|
"Diesel Rated" indeed. Oil formulated for gasoline engines can't keep the soot suspended in the oil. Diesel rated oils usually will say so on the jug, currently I think the specification is "CJ-4". Diesel oils have extra pressure additives and different detergent packages from gasoline oils to help suspend the soot load and deal with the increased pressures present in diesel engines.
If you didn't use a diesel-rated oil when you did your oil change, it would be a good idea to change it out sooner rather than later. It won't hurt the engine to run it, but I wouldn't wait for a 3-5000 mile oil change interval.