Oil change
I have an 06 Workhorse 8.1 I have been running 5 30 Valvoline I have 55.000 miles now and was wondering If I should change to 10 30 or go to Mobil 1 or just stay with what I have been doing ! I live ...
Forum Discussion
Stick with what the manufacturer recommends. The higher the winter weight the less the oil flows in cold weather.
