Originally Posted By: 440Magnum
Originally Posted By: JoeFromPA
The Rotella 10w30 is a dino oil suitable for gasoline applications, right?
Yes, but this is Rotella T Synthetic 5w40. Regular Rotella is available in many grades besides the usual 15w40 (by special order, its not stocked on the shelves most places) but RT Synthetic is not available in any grade but 5w40 AFAIK.
Yes, but in his case the difference, aside from any true need for the 40 visc, would probably pan out to duration of use.