I go for the cheap (economical) Wal-Mart $11 for a gallon. I have yet to melt down a motor because of cheap oil.
No oil melt down, ya, once when the oil ran out before the tank of fuel. Still a hard pill to swallow since it was my Ltd mono motor. Does somebody have a spare crankshaft?
I am ready to try corn oil at $7/gal. Will this smoke down the motor. We'll see. All cheap talk until I have to bitch ride back to the truck.