thank Oldfella.....I read the thread but I was still cornfused as there seemed to be a lot of jumping around. Now I know what I can go look for. for my first oil change. the previous owner has been using Amsoil Metric, supposedly formulated for m/c's........ That stuff is expensive. It was almost $13 a quart and I thought Mobil 1 at about $6 a quart was high. Good stuff though.