Adding fuel stabilizer after the fact will not fix the fuel.

As for running it - depends on the engine. I would say you can get away
with fairly bad fuel in an I/O and not have much problem - especially if you
mix say 50:50 w/ fresh 92/93 octane.
As for running it in an outboard 2 stroke - they will detonate and punch a
hole in the top of the cylinder. You can probably get away w/ a 20:80 mix
of old to fresh 92/93 octane but I would not go past that point.

--
Tony
my boats at http://t.thomas.home.mchsi.com

"Drew Shuller" wrote in message
...
Fuel stabilizer is supposed to help, a lot. Let's split hairs:

Would adding fuel stabilizer after the fact turn stale fuel into good
fuel?
How much would you have to dilute stale fuel with good fuel so there
wouldn't be a problem? We can all agree that allowing stale fuel to rest
in
a carb can varnish it up, but will running the engine with stale fuel
cause
problems?

Drew


"test" wrote in message
om...
Just for non mixed fuel.
I'll agree with Drew, on 1 part of his post quote--"varnish your
carb" I agree. I'm not so sure about Drews's quote --" Today's
gasoline's go bad in 30 days." I own 5.4l mercruiser w/90 gal fuel
cap, also Correct Craft 302 w/20 gal cap. I've had old fuel in the
both 20 and 90 gallon tank stored over 9-to 12 months - aprox 45gals
or more in big tank.
If you ad "Fuel Stabilizer" along with some octane booster and of
coarse some new fuel mixed in should be ready to go. The best advice
is to RUN the motor frequently to move any varnishing on fuel Carb -
jets.
If I'm wrong please correct me or just feel sorry for me.

Regards
Ron
Central FL.

"Drew Shuller" wrote in message
...
Harvey, Gould 0738's suggestion is the correct one. Even a gas/oil
mix,
when
added to your car's tank in small quantities, won't harm your car's
engine
or fuel system.

Today's gasolines go bad in 30 days. Using gas any older than that
will
varnish your carb/fuel system, and you really don't want that to
happen.

Drew
Waco, TX


"Harvey Arkawy" wrote in message
om...
I just purchased a used boat with a 1995 Merc 70 hp, 3 cyl. 2 stroke
"Force" motor. The previous owner said that the gas (~ 17 gallons)
was about a year and a half old. I would like to siphon it out into
4

five gallon cans. Has anyone done this and where do you suggest I
dispose of it. Please be kind.... I know where I don't want to put
it. I contacted the local Air Force Base Fire Department to see if
they could use it to burn during a practice fire, but the local Air
Quality Management Department (AQMD) required them to install
propane
burners and burn propane during fire practice.

Any help or suggestions would be appreciated.

Harvey