[Jeff@TopGearSolutions]

Originally Posted by Poldav6

Do you know how long the E85 stays good? I have had my car in a shop for 10 weeks now, with E60 in my tank. As winter is coming, one thing is starting the car but.. what about its quality. Does it deteriorate? Can it damage something after several weeks?

http://ethanolrfa.3cdn.net/dd9e74ce1..._rbm6bdgh3.pdf

Long story short, if properly stored it can last a year.

If it's already in a vehicle- 90 days is the most I'd leave it in as it has potential to absorb water. I'm sure people have let it sit for longer.

There may be an E85 based fuel stabilizer you can buy to increase the longevity.

[Poldav6]

Cool Jeff, thanks.