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FUEL QUESTION

G

Gary G

Guest
" I noticed in a post, that a

" I noticed in a post, that a midrange fuel was recommended in outboards..Is this true and why ??
Gary "
 
"Gary.... Most of the engines

"Gary.... Most of the engines require a octane rating of 87 octane or higher. However, there are many engines that simply will not run properly on the higher octane ratings (I have no idea why).

If the engine runs properly on a 87 octane fuel, increasing the octane rating is simply a waste of money.

Joe
"
 
" Joe,

Does this primarily

" Joe,

Does this primarily apply to larger motors? I have a little Merc 9.8, should gasoline even be an issue for such a motor? "
 
"Rob..... It's an issue fo

"Rob..... It's an issue for any outboard engine. If the engine runs fine on 87 octane fuel, and there is no improvement or a problem exists on a higher octane fuel, the choice would be obvious.

And pertaining to other type engines, my Ford F150 runs great on 87 octane. I've tried higher octane fuel and there was no improvement. However my neighbor's Porsche would never run properly on 87 octane.

Joe
"
 
" Little know fact about gasol

" Little know fact about gasoline.

Today's automobile will retard the timing
if a higher octane fuel is used other than
what the mfg recommends. Putting mid or
high octane is just a waste of money.

More important to any outboard is the
fuel/oil ratio. I find there is a huge
difference in performance when I just
happen to pour in the correct amount of
2 stroke oil... never less than 50:1...
Graeme, boating 30 years! "
 
Need to know oil/fuel mixture

Need to know oil/fuel mixture for a 1974 75hp chrysler outboard
 
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