How Long Can You Safely Leave Fuel In Your Tank?

[rbattelle]

Now that fuel is so expensive I can't really afford to drive my truck much, I got to wondering just how long I can leave fuel in it.



I haven't driven the truck in almost 2 weeks now. I filled up on January 29th, then again on March 27th. The March 27th fuel is still in the truck, and at my current usage rate it'll be in there for quite awhile longer.



Are there dangers to this?



Ryan

 

[CKelley1]

some of our large trucks and heavy equipment have set up to three years with no problems

 

[fox]

It can sit a longer time full than low on fuel. Less air, that allows algea to start.

 

[Skydiver]

I have only filled my tank one time this year.

Air will condensate and become water. When people leave a tank half full of fuel they tend to forget it is half full of air.



Back when I was skydiving, it was a big no-no to park our planes with less than full tanks.

 

[rbattelle]

That's good to know. Thanks, guys!

Ryan

 

[EBolgiano]

My truck often sits 4-6 weeks without being run. I always park it with a full tank and have never had any problem with it. My bigger concern is with the lack of lubrication at start up. Ed B

 

[Joe G.]

Use biocide to prevent algea from growing.

 

[Highfinance97]

Use biocide to prevent algea from growing.

This stuff is powerfull and Expensive but it works to kill it!!!!!!!!!!!!!

FPPF

 

[Okie-Go]

I guess with my extra tank in the bed I need to fill it. I can use the oem tank and it won't hurt so bad to fill it. To buy 100 gallons would hurt!

 

[jkidd]

I heard anything over 6 months can be at risk for that bacteria/ algae. I have nothing to confirm that with.