Originally Posted by windycityxx
What would be my average MPG on a 19' Stingray 195CS cabin
cruiser with the Mercury
3.0L ran at its most efficient RPM?
And what RPM and speed would that be?
Idle, any speed above idle and your mileage goes down, Now just at the point just before you plane can be very poor mileage, but generally the faster you go, the more fuel
per mile you will burn.
My single engine
175 HP Verado in a 21' CC would burn 8 GPH at 20 kts, I could sometimes get 3 MPG, but not usually. I doubt an inboard would be much more efficient
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