I guess I'd make the OP lose his mind but I use drip oil in all my OPE. Multiple weights motor oil, syn and dino, ATF, gear oil, MMO, whatever, all go into the drip oil container. I just recently did my two 10+ year old lawnmowers, and the snow blower will get some come October. Even the Honda gennies get it. I have no clue what weight it is and I don't care. They get fresh oil, it's always full, and it gets changed if I remember to do it.