ORIGINAL: sweetdudeplanes

I Team,

Have searched around a fair bit for an answer to my question with limited success.

Recently I purchased 4 litres of new nitro/glow fuel for my OS 46LA plane engine, problem is after about 4 tanks full I noticed that the stuff I bought is actually for R/C Cars and Buggies - doh! The brand of fuel is called "Glow-Max CB" green in colour it contains 5% Nitro there is no other info on the bottle as to oil/methenol content etc. (I found out later that the correct stuff is "Glow-Max AC" blue in colour)

I have run 4 tanks through my engine (before realising it was incorrect type of fuel) and after about 8 - 10 minutes of flying the motor cuts out, sort of splutters then shuts down. I read somewhere of the net that the oil content of the car and buggy fuel is 8% not up around 18 -20% as required for a bushed 2 stroke engine? Could this be what is causing my engine to cut out i.e. overheating.
One other thing I have noticed there appears to be bubbles in the fuel inlet line to carb upon landing, have replaced all fuel lines and tested for leaks all seems well - could this fuel be foaming causing this? Does plane fuel have an anti foaming additive in it?

Also the engine seems fine and has plenty of compression but do you think I have done any damage to it, from my mistake?

Any comments / advise appreciated,

Cheers,

Sweetdudeplanes.