Thread: Old Fuel- Sea Foam or Dump It?

Did you treat it before you stored it? If not, I'd use it as yard equipment or junk car gas.

Sea foam is not designed to increase octane or increase "Stail" fuel. It is designed to treat engines and componants and treat fuel from going stail. It also does not remove water from fuel.

This is the same with Stahbil products. Fuel going bad or stail can result from many factors including but not limited to: what type of container it is stored in, environment to which it is stored, and environmental changes during the storage time.

Your ace in the hole is that it was NON E fuel!

If it was me, I would choose one of two options just to be safe.
My first option would be to pump all the fuel out of the system and use it in my vehicle, lawn and garden tractor, or other.
My second option (if you don't have one) would be to install an inline fuel/water seperator (10 micron) filter.

Remember, it is much cheaper to put new gas in the boat than it is to replace an entire motor! Without someone physically checking the fuel for it's current octane rating and fuel/water viscosity, I would pump it out and start over. I would ensure to add a Seafoam type product to my first tank to help clean any residue that might be in the lines, carbs, or fuel injection system.

burn it

"If it was me, I would choose one of two options just to be safe.
My first option would be to pump all the fuel out of the system and use it in my vehicle, lawn and garden tractor, or other." Quote wicklundrh.

EXCEPT my boat uses premix fuel and it doesn't help in 4 cycle engines. weed eater and chain saw can use it but they don't use much of it.

Originally Posted by wannabe fisherman

"If it was me, I would choose one of two options just to be safe.
My first option would be to pump all the fuel out of the system and use it in my vehicle, lawn and garden tractor, or other." Quote wicklundrh.

EXCEPT my boat uses premix fuel and it doesn't help in 4 cycle engines. weed eater and chain saw can use it but they don't use much of it.

Good point.. I forgot about the pre-mix motors. Have not had to deal with them in quite awhile. It makes a good grass and weed killer!

Would a lawn care business buy it, for let's say 2 bucks a gallon? Will 5 gallons at a time really hurt in a tank of full gas in the car or back into the boat? Are we talking about 20 gallons or 50?

If it's that old and never had any stabilizers added to it .... I'd pump it out and take it somewhere it can be properly disposed of, and not use it in anything.

What kind of motor do you have that requires 93 octane? Just curious