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is fuel mixed with 2 stroke oil, bad for 4 stroke engine? #988956 03/08/10 08:58 PM
Joined: Apr 2000
Posts: 4,282
ldivinag Offline OP
Roll Me Over
just curious... i have some 6 month old fuel that i use for my 1/5 scale RC car.

leo d.

90 4runner, v6, auto, WCOR CitB kit,
marlin duals, arb rear, tt front
4.88, blah, blah, blah...

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From the Off-Road World
Re: is fuel mixed with 2 stroke oil, bad for 4 stroke engine? [Re: ldivinag] #988957 03/08/10 09:06 PM
Joined: Mar 2009
Posts: 587
69442 Offline
Rock Warrior
I run R-12 racing fuel in my Yamaha YZ250 2 Stroke. I usually mix 5 gallons at a time. At the end of each riding season I pour the remaining mixed fuel into my 1978 F350. I make sure the truck tank is near full to better dilute it and been doing this for years with no issues. Doesn't smoke, sputter or cough!

Re: is fuel mixed with 2 stroke oil, bad for 4 stroke engine? [Re: ldivinag] #988958 03/09/10 12:06 AM
Joined: May 2009
Posts: 177
Ralph Offline
I fly Gas RC airplanes and If fuel is over 30 days I put it in my riding lawn mower.

synthetic oil would be better than petroleum oil on the converter, but we are dealing with a fraction of a percent so neither should make a real difference.

Simple answer go for it


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