[30 Closed Cab PU]

Originally Posted by wmws

I use Rotella 15-40 and change it at about 500 miles. I have a K&N air filter but no oil filter. At 500 miles my oil is a little dark but no way black. If I put a drop on my finger I can still see my finger though the oil.

Do you run an carb balancing modification since you are running an air filter?