gas millage
best gas milage on a V-10 pulling a 30' coach.
Forum Discussion
Bruce Brown wrote:
Back when we had our V10 it had a sweet spot speed-wise where it got better mileage at - going from memory here, 70 MPH than it did 65 MPH. At 70 it would stay in overdrive going up hills and do a decent job maintaining speed. At 65 it would drop gears, the RPMs would climb, the speed would drop, and it would struggle to regain a reasonable speed.
I'm sure on the flat ground going slower would have returned better mileage. Where we traveled 70 was actually better than 65.
Again, that was going from memory. It might have been 65 vs 60. The point is slower isn't always better. Keeping your driveline at its most efficient point the longest/most you can should return your best mileage.
I have noticed that also. It does seem to be better when the RPM is higher, like when at 70 vs 65. The problem is that the F53 chassis is generic. It's built for every conceivable build type out there. So while a delivery truck weighing 12k lbs will do great, an RV weighing 22-26k lbs will perform terribly.
A tune will help it out tremendously and is what I will be getting next year.
