I have been mixing mine at 50/50 Super-Tech 2-stroke and Marvel Mystery Oil at a rate of ¾ oz of the mix per gallon.  After reading about MMO a little, I plan to eliminate it from the mix and go back to just 2-stroke oil.

It seems that the Marvel is that it is more Mystery than oil.  :>)

 

Bill B

 

 

And Mark, my math (75 G * 4 qts / 2 qts) says you are mixing at 150:1 … seems a bit light.

Perhaps I’m mixing too strong 22 L / .2 L = 110:1, one Gerry can at t time.

 

Jeff;

I expect it varies with installation and typical operating conditions, but I find with my NA 20B anything over ¾ oz/gallon (170:1) results in increase oil level in the pan; and dilution of the expensive Mobile 1. I use the Super-Tech (TCW3) 2-stroke oil. I would think the TCW3 spec is more consistent with our operating conditions than oils speced for high performance air-cooled 2-cycle engines; but I’d be interested if someone has better info on the subject.

 

Al