Hey, thats odd. I got a sale add today from Advance, with Rotella on sale. Isn't that diesel oil, or am I being stupid? Is that okay to run that weight in my slant 6 until I toss my V8 in it next summer?
In the old school yes. Diesel oil will be marked as diesel oil on the can. Most diesels today run 5w, especially Ford's as they are oil fired injectors. It helps them greatly.
I run 0w-40 mobil one in my 440. I used to run 5w-40 mobil one diesel oil prior to the local advance auto carrying the 0w exotic stuff. Works great.
