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Small bubbles inside gas tank


charliek
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After using your cleaner and rust inhibitor, today I applied the sealer to the inside of a gas tank for my Farmall H tractor.  I rolled the tank for over 45 minutes, drained the excess product, then rotated it every few minutes for another half hour.  I then left it upside down for about an hour and now notice I have several small bubbles inside the bottom of the tank.

 

Is this something I should be concerned about, or is it just cosmetic?  If the latter, that is ok with me.

 

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As long as it is micro-bubbles, you are fine. This can happen from excess humidity, trace moisture trapped in the tank, or excess film thickness.

 

Wait 4 days and poke the area with an unfolded coat wire coat hanger (or similar) and if the Tank Sealer feels solid, you are good. If the Tank Sealer feels soft, then let it cure another 4 days.

 

Please reach out if you have any additional questions.

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Thanks, but I am not sure what size you characterize as micro-bubbles, mine are probably about 1/4" in diameter. I am in the midwest, so hot and humid today. 

 

I don't plan to use the tank for at least 2 weeks, so I have time to let them cure and will do as you instruct above for the bubbles I can see.  However, this is a 17.5 gallon tank, with a baffle in the middle that runs almost to the base of the tank, so there could be some bubbles behind the baffle that I am unable to see, or along the sides or fronts.  Hopefully, with enough time and dry conditions they will cure ok.  

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