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Old Gas Cleaning

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Old Aug 2, 2025 | 01:22 AM
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Default Old Gas Cleaning

I'm getting around to putting my new engine in my 98 TA, well my car has been sitting with half a tank of gas for over 2 years now, so I know the gas in it is bad. What would be ideal in this situation?

I've been told to jump the fuel pump relay and let it pump all the old gas out and replace the filter afterwards, then fill the tank with fresh gas and some Redline fuel system cleaner. Anything wrong with this method?
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Old Aug 2, 2025 | 11:27 AM
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If you had a trap door it would be as easy as pulling the pump and hand syphoning the gas out of the tank.
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Old Aug 2, 2025 | 05:33 PM
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Depends a LOT on your local climate- AND the fuel type in question.
I am in Alaska; Two or THREE YEAR old gasoline is NO problem.
We have NO ethanol in our fuel, and highest peak summer temps here on the coast are middle 60's Fahrenheit.
Frequently salvage old backyard relics, havent been run in a decade or more: Hot battery, add two gallons of fresh pump gasoline, two seconds of ETHER in the throttle body, and they'll typically be running and idling on whatever mix of 5,6,7 year old fuel is in the tank.

If you park a load of "Gas-O-Hol" in Florida two years-- You'll probably want to drop the tank, and replace the fuel pump.
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