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Old 10-30-2019, 11:35 AM   #1
acstep
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Default gas

what can you use to clean a gas tank of 15 year old gas, varnish.
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Old 10-30-2019, 11:37 AM   #2
Bob Bidonde
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Default Re: gas

Fresh gasoline with 15% alcohol
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Old 10-30-2019, 12:00 PM   #3
dennis lumbert
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Default Re: gas

POR 15 cleaner/degreaser,(formally called marine clean)
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Old 10-30-2019, 12:13 PM   #4
rotorwrench
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Default Re: gas

Drano crystals & water work but be careful mixing and handling. Sodium Hydroxide, or Lye for short, can burn you but it works really well to remove crap from a gas tank without hurting the metal.
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Old 10-30-2019, 03:20 PM   #5
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Default Re: gas

I didn't find it difficult to just remove the whole tank, and clean it.
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Old 10-30-2019, 03:23 PM   #6
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Default Re: gas

Quote:
Originally Posted by rotorwrench View Post
Drano crystals & water work but be careful mixing and handling. Sodium Hydroxide, or Lye for short, can burn you but it works really well to remove crap from a gas tank without hurting the metal.
If you splash any of that stuff on surfaces you don't want it on, the best thing to wash it off with is beer. It will neutralize the lye. How do I know? I worked in a brewery for 12 years and lye was used in the bottle washer. That was when most of the beer went into bottles, not cans.
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Old 10-31-2019, 10:43 AM   #7
30 Closed Cab PU
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Default Re: gas

When using lye or Drano, is a final flush of baking soda/water needed?
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Old 10-31-2019, 12:44 PM   #8
J Franklin
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Default Re: gas

Lye is a Base chemical so baking soda won't help.
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Old 10-31-2019, 02:04 PM   #9
rotorwrench
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Default Re: gas

Lye would be diluted by fresh water rinsing. Water can be removed with alcohol, It can rust up with bare metal so it should be either put back into service or sealed to prevent corrosion unless it already has corrosion in there. Lye won't take the corrosion out. It's too bad that the terne plate doesn't last very well but that's what Ford used to seal them with.
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