50;1 Dominator, or intimidator. Get it at cost, so whatever my buds shop gets in of the 2. Ran it for years in sleds, dirtbikes, banshee, working saws, hot saws, weed eaters and air blowers, works good, never really had in issue with the oil.
But in reality, ANY Full Synthetic 2 stroke oil will be more than fine for you.