Brew for cleaning filthy gas tanks

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itchy
Posts: 69
Joined: Mon Apr 20, 2015 9:53 am

Brew for cleaning filthy gas tanks

Postby itchy » Wed Nov 29, 2017 7:28 pm

Have an old Neptune with a filthy fuel tank. Recall several times, several recipes appearing here for cleaning fuel tanks,
but up til now haven't had to deal with that. Anyhow, any help on what I could use would be appreciated!

2Fast4Me
Posts: 100
Joined: Sat Apr 18, 2015 8:43 am
Location: SW Wisconsin

Re: Brew for cleaning filthy gas tanks

Postby 2Fast4Me » Wed Nov 29, 2017 7:52 pm

Go to the search this topic at the top off the page type in gas tank varnish.lots of info there. More answers will follow from others.

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Steve A W
Posts: 609
Joined: Mon Mar 09, 2015 1:02 pm
Location: Northwest Indiana

Re: Brew for cleaning filthy gas tanks

Postby Steve A W » Wed Nov 29, 2017 8:39 pm

I had luck with E85, Let it soak then did the shake shake shake, with screws in it.

Steve A W

Member AOMCI MOB chapter

B.Morrison
Posts: 66
Joined: Tue Mar 10, 2015 4:02 pm

Re: Brew for cleaning filthy gas tanks

Postby B.Morrison » Wed Nov 29, 2017 10:55 pm

lacquer thinners, drywall screws and shake,let it sit ,shake.

davesko
Posts: 103
Joined: Thu Nov 10, 2016 9:48 am
Location: Hershey Pa

Re: Brew for cleaning filthy gas tanks

Postby davesko » Wed Nov 29, 2017 11:02 pm

I had good luck with organic apple cider vinegar and nuts and screws in the tank. Strapped it on a bicycle rim and spun it in my vise.

itchy
Posts: 69
Joined: Mon Apr 20, 2015 9:53 am

Re: Brew for cleaning filthy gas tanks

Postby itchy » Wed Nov 29, 2017 11:45 pm

Wow! E85, lacquer thinner, organic applecider vinegar. Yay, with lots of nuts and screws. I can do this. This is over a gallon tank. Lots of
room for lots of nuts and screws. AND, will also check in search, with gas tank varnish. Thank you all for your help!. The filth - and strong
smell of this tank - haven't seen it before! Thank you.

amuller
Posts: 645
Joined: Tue Jun 14, 2016 12:04 pm

Re: Brew for cleaning filthy gas tanks

Postby amuller » Thu Nov 30, 2017 12:30 am

Depends on what's in the tank. If organic stuff--dried up fuel, etc. you need a solvent. Acetone is probably the quickest and most aggressive. E85 will work over time.

If what you have to remove is inorganic--rust and corrosion--regular solvents won't help much and you need acid cleaners and maybe agitation with stones or screws. Be careful with aluminum tanks--alkaline cleaners eat aluminum.

If you have both you will need both approaches in sequence. I've cleaned up 6 gallon tanks with a sequence of about six steps, which produces a good tank but is a lot of bother.

Jerry Ahrens
Posts: 804
Joined: Tue Mar 10, 2015 9:49 pm
Location: Lake of the Ozarks Mo.

Re: Brew for cleaning filthy gas tanks

Postby Jerry Ahrens » Thu Nov 30, 2017 6:20 am

I use Castrol Super Clean along with HOT water. If the tank is really dirty, I mix it 50/50. let it set for 20 mins. or so, dump it out and rinse with more HOT water... repeat if needed. Hot water is the key.
Caution: Super Clean will damage paint if left on to long.
Jerry Ahrens AOMCI Member MAPS Chapter President

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twostroke
Posts: 75
Joined: Fri Sep 15, 2017 12:34 pm
Location: Central Lower MI

Re: Brew for cleaning filthy gas tanks

Postby twostroke » Thu Nov 30, 2017 6:45 am

Granted....I'm not terribly 'politically correct' with use of solvents, etc.... (I've been known to use dirty lacquer thinner as fire starter, too...) I use regular old toxic, evil and nasty carb cleaner that you soak carbs in prior to rebuilding them. On small tanks I'll fill 'em right up....with the remote tanks I'll put a gallon or so....let it set a couple hours (overnight if they're really foul), go after it with my hot-water power washer, and repeat if necessary. When it's clean, get a small bottle of good dry-gas, put it in and shake the daylights out of it, pour out, and that gets rid of the residual water. You can go to Napa and get a Mac's p/n 6402...it's a gallon with a little dipping basket for about $20. Pour it back in the can after use (don't throw it away...works just fine when it's filthy) and use it and the basket to clean outboard carbs better than you've ever seen. I even use it to clean small parts & hardware. Great stuff. Don't drizzle it on paint or decals, if you do, rinse w/water ASAP. Don't get it on your hands...it's caustic....and yer' hands will stink for days.

Jim
I say "Pardon Me" a lot. I had a 20H with a toilet bowl, then raced open mod sleds. :D

SquierKA39
Posts: 59
Joined: Sat Aug 12, 2017 10:44 am

Re: Brew for cleaning filthy gas tanks

Postby SquierKA39 » Thu Nov 30, 2017 8:48 am

I tryed all kinds of earth friendly and not so friendly stuff in an aluminum tank with very old dry hard gas varnish. They didn't work well, then I grabbed a can of oven cleaner spray, sprayed a lot of it in, let it sit about an hour, raised with hot water and some dish soap then lots of hot clear water. Came out nice and clean.


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