I will say this again....DA recommends other oils as well, Belray to name one, its in the manual but for some reason folks choose to ignore it.
My conversation with Brian when he was still at DA suggests that they have seen a number of failures with Amsoil but for other reasons still mention it.
They were more than happy with Belray and other GOOD quality oils run at the correct ratio.

Btw the only 2 DA100s I have seen cooked here were on Ams at 80-1