Tractors- - - -cars- - - -trucks- - - - -lawn mowers- - - - -they all get the 15W40 I buy in 5 gallon pails from Tractor supply. Haven't had an oil-related engine failure in the 30-something years I've been doing that. The chain saw gets the oil I drain out as bar & chain lube. I make sure the fire ant hills around the farm get well-lubed with drain oil, also!
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!