Last year I happened to snag a deal at Wally World on Pennzoil 2 cycle outboard mix oil, on clearance so I got 4 gallons for $20. Weird part is the next week it was back on the shelf for $15 a gallon. Anyway, I’ve used this in my 15 year old 20 hp Evinrude with no problems. Tell me why this wouldn’t be any good in a saw. Rpm the major factor? Thanks. And no, I WILL NOT bring up mix ratio!