I use AMSOil in my tractor (motor and hydraulics), Truck (420k miles), Car (100K miles), Jeeps (170k, 70K), my sons Dirt Bike (2015 KX450F), and my Harley (65K miles). I am sold, so far I have had nothing but good luck with AMSOil. I buy to keep, rarely sell what I love. This is why I use AMSOil.