you can't fudge physics that much. It takes a certain amount of fuel to make
a given amount of power. The example of 100hp burns 10gals per hour is darn
close. Diesels burn less per hour because there is more BTU's per gallon of
fuel(if I remember correctly)?

Mercury's Optimax engines are more fuel efficient because of the direct
injection of fuel.


"Stan (the Man)" wrote in message
...


Paul wrote:
A good rule of thumb is 10% of HP at full throttle for a carburated two
stroke outboards.

Paul

I'm not sure I understand what you wrote. Does that mean my 2-stroke 250
outboard should be burning 25 gallons per hour at full throttle. That
doesn't sound right. Can you restate your formula in English?

--
Stan

RB wrote:
What approximate fuel consumption gph should I be experiencing with my
'77
115hp on an 18' c/c running around on the bay, a fair amount of wide
open
throttle?