I'm running Ilmors, 7-10s. they claim better fuel mileage than Mercurys. I'm afraid to check mine. Anybody got any ideas comparing apples to apples?

Im running a single 710 in a 28ft boat.
Gets between 2.2 & 2.6 MPG.

Pretty spectacular in my biased opinion.
Both the mileage, and the mill.


Uncle Dave

1996 32 Sunsation with 500s running a poker run 1.47 mpg.

2007 32 Sunsation with 496 Mags running a poker run 1.53 mpg.

I'd say 30% better, that's being conservative.

LOL........a wanna be? YES A loser and fake? For sure!

Huh?

15,000lb sportfish. 502EFIs w/Arnesons. Average 1.1mpg

Good Morning,

Isn't there a base formula for determining fuel burn something like
(Horsepower x .55 lbs fuel) / weight of 1 gallon of fuel = gallons per hour.

Now if I have that part correct (highly unlikely) how would you deduct for hull/outdrive inefficiencies? Is there a method where you could use calculated prop slip? Hmmmmm the fun factor of this falls somewhere between a trip to the Dentist and Christmas shopping at the mall.

Thanks,
Rick

Hi!

Changing from 2 x Merc 2.5 EFI SS consuming 1,25 mpg (90 litre per hour at 40 knots) to a single Vrod 350 Sci consuming 4,5 mpg (43 litre per hour at 45 knots). A new world for next year.

And you pay 8,55 USD per gallon in Norway.

Cheeers, Toffen

Cheeers, Toffen

Yep the formula is when it gets below 1/4 on the gage it's time to add more fuel . Or put it back on the trailer and wait until next month's check comes in.