Flagship
Full Access Member
When I change the oil in my F-150, I have 6 quarts of Mobil-1 with, oh, maybe 1000 miles on it. (90 days). Is it OK to dump this into the fuel tank of My 89 IDI?
How about the Mobil Delvac from it's own engine?
Or, am I look to clog the, rather expensive, fuel filter?
How about the Mobil Delvac from it's own engine?
Or, am I look to clog the, rather expensive, fuel filter?