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How to avoid Rust in Metal gas tank of generator?

30K views 25 replies 21 participants last post by  War Horse  
#1 ·
My generator is seldom used and stored without gas in it. What coating, miracle spray have you used that works to eliminate the threat of rust in your metal generator gas tank? I lost my ablility of storing large quantities of gas in any shed, out building (new hoa) and have to reduce the amount of gas stored in the garage. Storing the generator tank full is out of the question.
 
#2 ·
Are they inspecting your place? If not store gas in it anyways. I'd do it just to spite them. ****ing HOAs, can't stand them.

I know of a few substances used to coat drums to store gasoline in, but I don't really know how you would get it in a gas tank without clogging the lines.

Devon Flexane 80 can get purchased in liquid or putty form. I've used the liquid a few times and it's good stuff. If you can figure out how to get it to coat the tank without clogging the lines, that's what I'd use.
 
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#15 ·
por-15 is a taank sealent made for



originally boat tanks (installed) that ethanol was erodeing the poly that the tanks were made of . works great in steel tanks, easy to use. they make a kit for smaller steel tanks, a wash, a etcher , and the sealer.
 
#11 ·
WD-40 is a water dispersant, cleaner, etc.. It cleans oil off of steel or anything else, it does not inhibit rust unless you spray it on 4 times a days, and even then.....

Take the tank off, clean and dry it. store it inside. Or move to a place that does not have a HOA. HOA = Communist
 
#13 ·
I don't understand why you won't or can't store gas in the generator tank...Always gas with STABIL......You may go to start it a few months from now and it won't start..........Little spiders can also get in and clog things up after a while.............
 
#14 ·
You can use STABIL and some e10 fuel in the tank, just change it out once a year so it doesn't go bad in there. Alternatively, mix a small amount of gasoline with some Automatic Transmission Fluid and slosh it around the inside of the tank, then drain the tank, and cap up well. ATF is great and loosening rusted parts, and preventing rust and oxidation, such a thin coat should blend fairly well with gasoline and run right through. I live in an apt. I have a 7000 watt generator stored on the patio under a tarp with a bungee cord around it. I keep the tank half full with gasoline plus a double dose of stabil. I run it for about 30 minutes every other week when the lawn care guys are around so no one notices.
 
#18 ·
Volvo 1978 242 GT And Rust In The Fuel System

Same sort of problem. Rust in the works. Also tiny bits of the factory OEM gas tank sealer peeling off because of the alcohol in todays fuels. The solution, like already said, was done at a local motorcycle shop. They dropped the tank, cleaned it out and re sealed it. Then I replaced all the fuel lines and both fuel gas purifier dirt remover things. K-Jet primitive fuel injection. When it worked it was great. When it did not.........auuughhhhh!

For some reason spell check is not working tonight worth a darn. Go figure. HB of CJ (old coot) :) :)
 
#20 ·
I know this is an older thread, but instead of dealing with petrol why not get a propane/LPG conversion kit for your generator?

You can always run petrol if need be, but you don't have to worry about long term effects of residual gas remaining in the tank/fuel lines/carb.

Also, if your HOA has an issue with storing gasoline, perhaps 20# propane tanks will slide?
 
#23 ·
There is a product called Evaporust that works better than any thing else I've tried .
Secondly fill the tank add a stabilizer and seal the tank (no air space) . the cap has a breather or there is a breather some where on the top of the tank ,close it. the fuel will not go bad and no moisture will enter it.
On the cap ,you can take an inner tube and cut a disk that just fits in the lid of the cap .remember to remove it before starting the engine because the idea of the vent is to allow the fuel to move other wise a vacuum develops.the engine dies starving for fuel.
Shut off the fuel to the carb, and drop the bowl or run the engine till it dies leaving nothing in the bowl .
Or add the fuel conditioner run the engine enough that your sure the conditioner is well mixed and in the bowl as well and leave the fuel line valve open .
If you have extreme temperature differential I would add that covering the air filter may help in reducing moisture making it's way to the carb . If you atmosphere is particularly dry don't worry about it.
I have services boats we stored this way 5 years standing and no problems.(except a dead battery )
 
#26 ·
old car resto trick

First clean the tank with white vinegar, fill it up and let it sit for a day or two, this will do a great job removing rust or any thing else in the tank. I recommend POR15 as its a proven tank sealer/repair process, there's a lot of prep work to make a clean job but when its done its good to go.
 
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