RC Fuels Nitromethane, Castor Oil, Synthetic, heli fuel, 4 stroke, etc...Fuel Q&A is here!

Fuel tank clean out

Old 08-15-2021, 02:37 PM
Junior Member
Thread Starter
Join Date: Jul 2021
Location: Midwest
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
Default Fuel tank clean out

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
Old 08-15-2021, 08:51 PM
A. J. Clark
A. J. Clark's Avatar
Join Date: Mar 2004
Location: Craigville, IN
Posts: 736
Received 23 Likes on 22 Posts

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.
Old 08-26-2021, 08:46 AM
My Feedback: (2)
Join Date: Jan 2002
Location: Ivyland, PA
Posts: 2,299
Received 1 Like on 1 Post

I use isopropyl alcohol. It works similarly to methanol and is less toxic. But soap and water are probably better.
Old 08-28-2021, 05:57 PM
1QwkSport2.5r's Avatar
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 10,413
Received 76 Likes on 69 Posts

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.
Old 09-04-2021, 10:29 PM
Join Date: Jan 2011
Location: , HI
Posts: 55
Received 6 Likes on 5 Posts

Originally Posted by 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
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.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.