Jmccrabb58

Picked up a CG 90 trainer from a yard sale
want to clean all of the fuel system
nitro fuel is so expensive, can I use methanol

A. J. Clark

Soap and water and a little scrubbing in the tank is fine. Rinse. Then let it dry. Methanol is ok. I think to get dried up crap cleaned out soap is better.

JPMacG

My Feedback: (2)

I use isopropyl alcohol. It works similarly to methanol and is less toxic. But soap and water are probably better.

1QwkSport2.5r

I won’t introduce more water to a system than is whats critically necessary. BEST thing to do is replace brass parts with new, replace the tubing and if needed, replace the tank plug. Clean the inside with acetone and an old toothbrush. Acetone works better and faster than any of the alcohols. However methanol would be the best one to use if acetone is t an option.

HansenTsang

Your nitro fuel is also methanol. Methanol, oil and nitromethane. So pure methanol is ok to use if you can get it. I wouldn't waste methanol though since I use methanol, mix with oil and run then engine with it.

For cleaning I get denatured alcohol from the hardware store.

Soap and hot water is also good. Just make sure you let everything dry before putting things back together.

Depending on the condition of the fuel system. You can probably save the tank but the rubber stopper may be old, brittle and sometimes even gummy. I would get a new one from Dubro or Sullivan product. Also new silicone fuel line will help. You want to make sure the plumbing is good so there is no leak or blockage.