I just bought my 3rd qt of Valvoline Universal 2 stroke oil.at AutoZone. 5.99 a qt. Tomorrow, I'm gonna read the label. I only mix a qt at a time in an attempt to keep the old Mantis happy. A qt of gas and 1oz of oil, 32;1 . The weed wackers like it. The Stihl Farmboss and the Lawnboy mower run great. The engine drip oil from the mufflers, but the extra oil and a tad rich to keep things cool. and Give me plenty of power and longevity.
