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Discussion Starter · #1 ·
I have a 1998 15hp mercury 4-stroke short shaft tiller that just opened the crate last year and looks brand spankin new.

This motor made from europe power plant and it's over built bullet proof motor.

I just want to know how much fuel burn in a gheenoe?

Gallons per hour at WOT?

U know what website I can find?


7,690 Posts
Researched this question a few years ago.

Basic rule of thumb:

Horsepower divided by 10
is the number of gallons burned per hour WOT

10 hp burns 1 gallon per hour WOT

100 hp burns 10 gallons per hour WOT

so 15 hp burns 1.5 gallons per hour WOT

If you want to get picky use these formulas:

An in-tune four-stroke gasoline engine will burn about 0.4 to 0.45 pounds of fuel per hour for each unit of horsepower.

A well-maintained two-stroke outboard burns nearly 0.6 to 0.8 pounds of fuel per hour for each unit of horsepower.

Gasoline averages 6.2 pounds per gallon (depends on type)
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