Ran last year amsoil dominator 50:1 this year on my ported 710cc im running quicksilver 40:1 no issues yet.
Personally i dont think more is better after an extensive chat with Art. Like he said, adding to much will throw off your jetting. Oil to fuel ratio is just as important as fuel to air.
any minute now....
And that is why I have my carbs dialed in on 32:1......
A stroker crank is 1500.00, Dasa cast cylinders 1500.00, port work to cylinders 1st and 2nd time 1500.00, case work 600.00, pistons 400.00 pr, where is too much oil a bad thing? Not to mention my previous discussion of oil helping keep the rings expanded fully......