Looper Shutdown with a rattle noise

[nymack66]

Originally Posted by THEFERMANATOR

25:1 is double oil. I quit double oiling awhile back as I had 2 engines seize up on me from double oiling. Oil burns hotter than gas does and also makes your fuel mixture thicker which causes your engine to lean out under load. It will also cause excess carbon build-up if you don't run some sort of de-carboning additive through the fuel.

Thanks guys, Ferm should I use 40:1 or 25:1 ? I did see some carbon on the plugs from the 40:1 with just under two hours on it ! I am really concerned about the lock up on the engine ?