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I would think some of the fuel components would destabilise after that long. I'm sure that's why gas stabiliser is available. Call Toyota

Just drive nice on that tank of gas until you get some new fuel in it. Did you put any fuel stabilizer in it before it sat for a year?

I would siphon out the gas and replace it with new one. I don't trust adding more chemicals to something that's already sensitive.


But if you put stabilizer before it sat then you should be ok.

Basically this. And be kind to it for a few tanks.

Although I've heard tons of stories of people starting up cars after decades and it being ok. So do what you think is right.

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Wouldn't hurt to do an entire fluid flush, and it would only take you an afternoon and a few hundred dollars to do

Unplanned Government sponsored rehabilitation?

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Was it stored in a garage or outside?

Also prime your engine before you start her up. Crank it with gas pedal WOT - no spark but will build oil pressure and start to lube things up.

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