Re: Bad fuel 10% ethanol?
 

How did they determine it was bad fuel?

Thanks,
Jeff

Re: Bad fuel 10% ethanol?
 

We have been using 10% fuel here in Michigan for several years now. I run my tanks down to 1/4 or less in the fall. In spring I fill up with good high octane fuel. So far no problems.

Re: Bad fuel 10% ethanol?
 

Not trying to hijack... but on this subject...

if I put her away with half of a 120 gallon tank of 89.

Should I stick 20 gallons of 93 in there to bring the average up?

Sorry about your engine Jeff.

Re: Bad fuel 10% ethanol?
 

Depends on what min octane you need it to be and how long its been stored.

Re: Bad fuel 10% ethanol?
 

been stored since September.

Min octane is 89

Re: Bad fuel 10% ethanol?
 

Your octane is probably down to about 85. You will need mix a 120 gallons of 93 with it to get it back up to 89.

Its all math

120gal x 85= 10200
120gal x 93= 11160

10200 + 11160= 21360

21360/240gal = 89

Re: Bad fuel 10% ethanol?
 

What would you guys recomend to do with the gas? I have a 60 gallon tank with about 40 gallons of 5 month old E10 fuel. I have an electric fuel pump and I am sure I have cycled all of fuel through the separator. If I empty my filter and check for water can I use octain boost and 20 gallons of fresh fuel to get it back up to speed. Again I do not even know if the fuel is bad. But everyone seems to think E10 is only good for 30 to 60 day. If I need to ditch the fuel what do I do with it?
Thanks,
Jeff

Re: Bad fuel 10% ethanol?
 

I filled my truck, my car, my neighbors car etc :D :D Rest went into a 1000gal holding tank for excavators and work trucks that a friend had. Fuel is fine for running in cars, lawn equipment, so forth. Just don't want to take a chance with $$$$$ motors.

Use the electric pump and move it to red jugs (6gal) if you have them. Man ... with 40 gals and a Holley Blue (110gph) you should be done in < 20mins. and not that much fuel to be bothered with. Mine took a while longer and more $$$ to replace. It may not have caused the problem, but its best to just eliminate the possibility entirely and be done with it! ;)

Next year I'm leaving my tanks dry!!!

Re: Bad fuel 10% ethanol?
 

I called a friend that works at a local fuel supplier. He recomended to do the same thing and blend the old fuel with the new. I don't know if fuel is the problem but I am not taking any chances. The truck and car only need 87 so if a mix the 5 gallons of old fuel with 15 gallons of 93 it sounds like that may work. I will tell everyone I know for now on store your tanks empty and fill up in the spring.

Re: Bad fuel 10% ethanol?
 

Thanks for the equation. :D

Using it with the actual numbers...

1/2 tank= 60 gallons of "85" = 5100
60 gallons of 93= 5580

10680/120 gallons = 89

Whoo hoo!