C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

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Old Sep 21, 2009 | 08:30 PM
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Default Old Gas

Just thought I'd post this for those who many need the information in the future.

Due to an electrical problem (which turned out, to my embarassment, to be nothing more than a loose spark plug wire at the Opti) my 92 LT1 sat in my garage, unstarted, for 20 months with a nearly full tank of gas. Once I got around to working on it, I was concerned that the car would run poorly at best with 20 month old gas.

I pulled the plugs, squirted a teaspoon of oil into each cylinder, closed her back up, charged the battery and she fired up without a hitch and seemed to run fine.

Not only did she fire right up, she also ran pretty good too. There were no obvious performance issues to be noted.

Amazingly, she even passed smog with flying colors, to my very great surprise and relief!

As an aside, I was inclined to drain and refill the tank before restarting her, but based on information I read here I chose not to. It was a good decision, in this instance.

Old gas does not necesssirly equal bad gas.
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Old Sep 21, 2009 | 09:18 PM
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stabil and never worry again
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Old Sep 22, 2009 | 12:19 AM
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Originally Posted by SmokinRide
stabil and never worry again
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Old Sep 22, 2009 | 12:37 AM
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Originally Posted by czissman
Just thought I'd post this for those who many need the information in the future.

Due to an electrical problem (which turned out, to my embarassment, to be nothing more than a loose spark plug wire at the Opti) my 92 LT1 sat in my garage, unstarted, for 20 months with a nearly full tank of gas. Once I got around to working on it, I was concerned that the car would run poorly at best with 20 month old gas.

I pulled the plugs, squirted a teaspoon of oil into each cylinder, closed her back up, charged the battery and she fired up without a hitch and seemed to run fine.

Not only did she fire right up, she also ran pretty good too. There were no obvious performance issues to be noted.

Amazingly, she even passed smog with flying colors, to my very great surprise and relief!

As an aside, I was inclined to drain and refill the tank before restarting her, but based on information I read here I chose not to. It was a good decision, in this instance.

Old gas does not necesssirly equal bad gas.
yup, I don't worry about it, but now I might with the gas being crap from the pump already.
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