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I did not drive my C7 for 37 months due to health issues. Last May when I took it off the lift, it started right up without issue. Drove it down to about half tank over a two week time period and then just filled up. I would not worry about one year with 93 Top Tier at all.....doing anything is a waist of time from my experience. drive it, FWIW.
Originally Posted by DTOM
One year is fine. An option is to run it down 1/4 tank, fill it up with fresh fuel, repeat.
Not sure I understand. Why run it to a half tank or a quarter tank? That takes more cycles to lessen the amount of old gas. Sure, you can throw snake oils at it to rejuvenate the gas if that makes you feel better. Assuming it has not been stabilized before, isn't it better to run it to empty before filling up? My thinking is that if you have 99% fresh gas, it is better than 50% or 75%
^^^^ But you'll still have bad gas in there.......1%
Better to drain the tank, than to take that chance.....
To be absolutely certain, sure. In this case, you have run off 99% so what is 1% more? If you want to start from the beginning and drain the tank it is about $1000 and up, including a tow. IDK if you can easily run the pump without the engine running to drain the tank
I'm not sure just draining the tank will be sufficient. I'd replace the tank. Why take chances?
Exactly. I think that you'll also have to change the windshield, drivers window glass and the front/rear bumper covers to make this tank replacement work out, just to make sure...just say'in
Exactly. I think that you'll also have to change the windshield, drivers window glass and the front/rear bumper covers to make this tank replacement work out, just to make sure...just say'in
As a last resort you could add ONE OUNCE (1 oz.) of Pri-G gasoline additive to the tank and see if it'll rejuvenate the gas. There have been several stories floating around that that tactic works on real old gasoline. The Pri-G rep I spoke to says that adding more than recommended won't hurt anything, it's just expensively wasteful. The proportions are 1 oz of Pri-G for every 15 gallons of gasoline. That worked for my F-150 after ~26 months.
Don't overthink it, just drive it. I'd run it til its on E as quickly as practical and then refill with all new gas. I might run a bottle of techron through it in the next tank.
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