Quote: Does anyone use diesel oil in their classic?
Yep. 15-40 in the Duster, and in the 79 van. I even run the 10-30 semi syn in my 93 Corolla.
10-30 should be fine for most applications. I had run the 15-40 in the others because I got a killer buy on it for the Cummins which takes 3 gallons.
Thanks for this - when you read the ZDDPlus literature they warn against using diesel oil because of the detergents in the oil.
I would hate to have a clean engine! I can't see buying all these expensive oils and additives for the street. At 150K regular car 10-30 Valvoline had kept my van engine really clean. Mostly highway miles.
Maybe the ZDDP in the Rotella will clog the converters on our '06 Caravan, and on my Corolla? I doubt it. I put 500 miles a week on the Corolla. Oil changes every 5-6K. Been doing that since November 2011. Next oil change is due at 193K. Engine is clean. Oil looks great when I change it.
