Quote Originally Posted by funkymonkey1111 View Post
Is used engine oil something folks readily want? I usually accumulate 5 or 6 gallons before i take it to the recycler. is that enough to be worthwhile for anyone?
You can run up to 80% waste oil to 20% diesel fuel in the older cummins and powerstrokes. It smokes a bit and you can't do it during winter because it will gel but it will work just fine. I have a buddy who runs a shop out of his house and that is what he does with his used engine and trans oil. He keeps his powerstroke at about 50/50 which is where I will run it once I pick up another diesel truck. Cut my fuel costs in half.