How long is gas good enough

[bigtiller]

I don't drive my 2007 GMC pickup very often, because Mrs.tiller's little Malibu gets pretty good gas mileage.
I put STP gas treatment in every tank of gas for the GMC and record the date and mileage. Today is exactly 6 months since I filled it up and it still has 1/3 of a tank of gas.

I know I should just go for a ride and burn the old gas up but I am wondering how long a treated tank of gas can go before doing more harm than good.

 

[RustyA]

If it were mine I would top it off with 91 octane as if it was 87 six months ago it's probably below 80 octane now.

 

[oosik]

I put Stabil in the gas for my ATV & chain saws. It says it is good for up to two years. What does the STP say on the back of the jug?

 

[kthompson]

No doubt six month old gas is not as good as fresh but over the years have used gas at least four months old many a spring time in lawn mower. Have boat with in board gas tank and hope year old gas is fine for been in shop for that long. Think finally have drive and upholstery repairs and updates done.

Like the advice of topping off with high octane.

 

[bigtiller]

I put Stabil in the gas for my ATV & chain saws. It says it is good for up to two years. What does the STP say on the back of the jug?

It doesn't say anything about longevity, just the usual lawyer speak about danger, combustible, children, etc.
The only thing it says is... save gas, prevent freeze ups & deposit build up.

My dealer/mechanic recommended using any product like this on a regular bases to help keep the injectors clean.

If it makes a difference, I usually buy ethanol free 89 or higher octane or gas.

 

[WranglerX]

I don't use any addatives, i rotate vehicle use every couple of weeks, always keep at least 1/2 full tank in all "running " vehicles, but I live in Calif foot hills where we have high fire danger and evacuation notices may come fast, and our faulty PACIFIC GRAFT & EXTORSION is treatening to shut off power if "conditions" that could lead to any utility they operate may cause fire threat....

Do not buy any PG&E stock, if you have it sell it off, they gouge the rate payers, to pay drvidens to stock holders, and let their infrastructer deteriate to point it contribuites to local fire danger...

Off my rant now...

Gas milage, whats that, I have my vehicles to use, if I'm not using it, it probably needs to be eliminated....

Never have had any issues of my cars, trucks, mowers, generstor, pump, not strating because of "gas" issues other than ethenol swelling up needle seats in B&S engine carbs.... B&S, are you lidtening?

Dale

 

[lilranch2001]

It doesn't say anything about longevity, just the usual lawyer speak about danger, combustible, children, etc.
The only thing it says is... save gas, prevent freeze ups & deposit build up.

My dealer/mechanic recommended using any product like this on a regular bases to help keep the injectors clean.

If it makes a difference, I usually buy ethanol free 89 or higher octane or gas.

+1 :thumbsup:

 

[Oldoak]

I put Stabil in the gas for my ATV & chain saws. It says it is good for up to two years. -----------------

Yep, been using that for years.

"How long is gas good enough", depends upon who you ask. As you are sure to find out here. :laughing:

 

[TractorGuy]

My motorcycle has been sitting a year. Fired it up the other day and it ran fine.

 

[3Lfarms]

I filled the generator tank on my toy hauler and treated it with both Stabil and Seafoam. That was 4 years ago, and the generator starts and runs fine and powers both A/C units no problem. It wasn’t even non-ethanol fuel either.
I will run the genny this summer till it’s gone, then fill it with fresh fuel and treat it the same way.