I printed that out and read it while waiting for the motor to arrive.. So if I read it right synthetic didn't do very good? Amsoil seems to roll right off most guys toungue when you ask about oil.. Mike McMertry's son is a TOC champion or something, but then again he doesn't pay for his DA's.. Mike said he breaks in 100:1 so he doesn't have to fool much with his needles after break in, he also said that Amsoil was so good that it made the break-in process longer.. Then again he gets the DA's at cost.. Oh who knows... I think I will use Amsoil 80:1 then 100:1.. An older guy I know uses it on an old G-23 he has had for years... I guess we'll see how it goes..