Does anyone here use used motor oil or used cooking oil, straight, not filtered in their diesel engine? Brothers friend has a older or early 90's dodge with the 2valve cummins in it and uses this without any noticeable problems. Would doing this harm anything or do any damage? Other than it being smokey I dont think so.
correct me if I am wrong and any advice, opinions and thoughts are greatly appreciated.
correct me if I am wrong and any advice, opinions and thoughts are greatly appreciated.