This was posted a few months ago on our boating forum here in the UK 496HO 700rpm=1.61 gph
750rpm=2.0gph
850rpm=2.17gph
1070rpm=4.26gph
1525rpm=5.67gph
2000rpm=8.55gph
2100rpm=9.22gph
2200rpm=9,57gph
2400rpm=10.43gph
2800rpm=10.55gph
3000rpm=11.67gph
3300rpm=14.5gph
3500rpm=16.49gph
3800rpm=19.51gph
3900rpm=19.73gph
4000rpm=21.17gph
4100rpm=22.98rpm
4500rpm=29.26gph
4600rpm=30.1gph
4700rpm=32.21gph
4800rpm=33.32gph
4900rpm=33.64gph
4950rpm=34gph
This is usa gallon one motor

I get 2-2.5mpg at 38mph depending on the load and conditions, if you get more than 1 mpg you can quote it that way if its less than you usually say GPH at xx MPH or knots

The main reason to love outboards, especially on a 28 Skater......with 300XS I burn 30gals hr @ 90mph according to the SC 5000 computer.

CORRECT ANSWER!!!!!

Hahahahahahahahahaha!!!!!!!!!

MisterFiberglass, based on your serious concern about fuel consumption and your comments about not wanting to carry insurance in the Skater forum... this really isn't the sport/hobby for you!

ROCK ON !!!!!!!!!!!!!!!!!!!!!
I DON'T PLAY BASEBALL BUT I HIT ALOT OF HOME RUNS ...
ITS A SKATER NATION !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !

I think you mean per motor so your really burning 60 gph at 90mph which is 1.5 mpg at wot which is still fantastic.

Top speed is 180 GPH... So 1 gallon every 20 seconds...

We don't stay there long...as you can see.

[YOUTUBE]http://www.youtube.com/watch?v=K4nsj5bc1RE[/YOUTUBE]

I got the same economy at 90mph with my 28 Daytona with twin 496's, I only got 2 mpg at cruise though I think the outboards are better at 60mph

What's cruising? That sounds like something my Grandpa would do. My throttle has two positions, up and down. My engine builder told he was going to remove my throttle and replace it with a switch. I told him no, I wouldn't have anything to hang my hat on.