How do I mothball a gas tank? - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

 
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post #1 of 7 Old 01-31-2015, 04:47 PM Thread Starter
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How do I mothball a gas tank?

Title says it. That's my question. How do I mothball a gas tank?
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post #2 of 7 Old 01-31-2015, 04:53 PM
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I would drain all the gas out. If you are in the rust belt put in a light oil that you can easily wash out before the next use.

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post #3 of 7 Old 01-31-2015, 05:29 PM
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bsklr,
If it is a KLR650 fuel tank, you will have to tip it 'just so' to get the last pint of fuel into one corner or another and Siphon or Suck Out that last pint.

If it is short term storage, engine oil is probably fine.
If it is to be Long Term storage, I'd suggest 'Storage and Fogging Oil' for boat engines.

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post #4 of 7 Old 02-01-2015, 05:51 AM Thread Starter
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Thanks for the info, guys.

KLR650 tank, but off the bike, so no trouble draining it.

I'm going with motor oil. Don't know if it's going to be short or long term, but I'm going to seal the cap with plastic sheeting as well and wrap/box the tank.

Preservation for "some day". I'm substituting an older tank that is a little the worse for wear and willing to take on a few slings and arrows of outrageous fortune.

Last edited by bsklr; 02-01-2015 at 05:55 AM.
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post #5 of 7 Old 02-01-2015, 08:34 AM
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2nd vote for boat fogging oil. When ready to reinstall add 1/2 cup fresh gas. Shake. Dump. Install and fill.

The feeling of the wind in your face can lift your heart.
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post #6 of 7 Old 02-01-2015, 09:47 AM Thread Starter
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Quote:
Originally Posted by Toney View Post
2nd vote for boat fogging oil. When ready to reinstall add 1/2 cup fresh gas. Shake. Dump. Install and fill.
I did a little research on fogging oil. I did not find anybody specifically using it for gas tanks.

Fogging Oil seems to be mostly used in top ends by taking out the spark plug and spraying it in there. "Not too much" for that seems to be the watchword (albeit there seems to be little information on how much to use.)

Various problems like not being able to idle and smoking are cited. Relatively speaking it seems to be non-compressible. I'm wondering how much to add and how I get it to coat all surfaces of a gas tank, particularly a KLR650 gas tank. I can't see in there and am not likely to invest in tools that would let me see in there. It's likely to settle into the narrowest of spaces of the gas tank-so how soluble is it after a length of time (though I acknowledge that might not present a problem)?

I've never used fogging oil.

So, a liquid that I can slosh around to be reasonably sure all is coated seems indicated. Motor oil for this purpose is cheap.

Cost. 10-20$ is probably my budget. 25% of a new-to-me but used tank would seem to be going a bit far as future use for me is as yet undetermined. I just know the tank, in great condition now, is going to get a bit of beating if I use it. The tank I have from a parts bike, and that I will put on, will find any new scars to be unremarkable. Considering what I paid for the parts bike and what I've already used, the cost of the replacement tank is negligible.

My consideration is cleaning the bike up a bit before it gets sold someday though even that is suspect--my other rideable bike is 18 years old and I've known it since the showroom floor.
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post #7 of 7 Old 02-02-2015, 09:58 AM
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Quote:
Originally Posted by bsklr View Post
I did a little research on fogging oil. I did not find anybody specifically using it for gas tanks.
Probably not. Most people add fuel stabilizer and store a bike no more than a year with gas in the tank and almost full. If I were storing a tank for many years, I'd want some type of light oil inside it. BUT I'd flush it with gas BEFORE I rode it years later.

If storing bike long term I'd wax all the paint, do an oil change, start it and warm it up. Then I'd fog down the engine with fogging oil. Might spray all metal parts on the bike with a light oil to prevent rust and store it in a dry place with the weight off suspension. Tires deflated. Covered to protect from sunlight.

The feeling of the wind in your face can lift your heart.
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