15hp mercury 4-srk fuel consumption?

Discussion in 'Outboard Maintenance' started by Flyline, Feb 17, 2009.

  1. Flyline

    Flyline Won "Do More With Less" Award!

    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?

  2. Brett

    Brett > PRO STAFF <

    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)