Rick75

My Feedback: (3)

I have a Magnum XL 120AR 2stroke engine and after every flight my plane is covered of black oil from the exhaust.
Is this normal?
the engine has about 8 flights.

Jim C.

is it black like coal black or the dark brownish stuff... if its really really black you could be running way too lean and its burning the oil .... what type of fuel / oil are your useing???

big max 1935

My Feedback: (9)

Aluminum to aluminum wear will cause black oil. Something loose, muffler? Put some of the black oil on your finger & in a light look for shiny particles. Some thing may be going kaput ! MAX H.

Rick75

My Feedback: (3)

thanks big max 1935, I think you hit right in the head.
I just check my muffler and was a little loose.Hope this was the problem.
PS: I'm using 15% fuel and OS Glow Plug.