Question 2024 Dutchstar fuel economy

[Rich W.]

I agree - 7+ is doing just fine. I am often in the 7’s and even 6’s depending on terrain with my 6.7 31,000lb Ventana. Best I’ve ever done was 8.9 and that was in ideal conditions and really trying to hit 9mpg. 7-8 is typical for me traveling between 60 and 65mph.

 

[Neal]

I don't know how much "space" foam displaces but IMHO if you want to get an accurate mileage assessment, you should slow fill to full avoiding foam, drive a route that's near level and get the fuel level as low as you can stand, then slow fill again to avoid the foam, then measure your result. I think we all know it's something around 7 for these beasts, beyond that I stop counting or worrying. The biggest thing is trusting your fuel gauge. This last leg home I had to put that trust to work and arrive at the fuel station in "ding" mode (low fuel alerts) and even still, I had 20 gals (out of 100) remaining after a slow fill. Mine calibrated/checked good. I did have to have a sending unit (or something along that line) replaced about two years ago from the fuel gauge going wonky on me.

 

[Kevin D Pem]

I don't know how much "space" foam displaces but IMHO if you want to get an accurate mileage assessment, you should slow fill to full avoiding foam, drive a route that's near level and get the fuel level as low as you can stand, then slow fill again to avoid the foam, then measure your result. I think we all know it's something around 7 for these beasts, beyond that I stop counting or worrying. The biggest thing is trusting your fuel gauge. This last leg home I had to put that trust to work and arrive at the fuel station in "ding" mode (low fuel alerts) and even still, I had 20 gals (out of 100) remaining after a slow fill. Mine calibrated/checked good. I did have to have a sending unit (or something along that line) replaced about two years ago from the fuel gauge going wonky on me.

An add! Any change in fueling pad level, and you would need to count for surface area in tank.

Fuel systems must monitor flow into the system in order to inject proper fuel volume. That is why mileage data is available from the computer. All the data that seems to be for your amusement, like ambient temperature, is needed to compute fuel injection timing based on environmental factors. The efficiency display is simply a feed from the engine control computer. This means the data is very accurate. My guess is if you have access to computer feed you could display much more than you think!!!

 

[Neal]

I had a fueling stop recently that was pretty out of level and as I have air leveling, I used that to fuel.

 

[newmarokie]

kevin,
I have often wondered and come to the conclusion that fuel burn for the generator is not included in the MPG registered on the dash. Do you concur?

 

[Kevin D Pem]

I had a fueling stop recently that was pretty out of level and as I have air leveling, I used that to fuel.

Don't have that option! Quit calculating some years ago. When I did do that I filled to the top of the filler . Today I use the tools supplied knowing that it is only as accurate as the odometer/GPS.

 

[Neal]

It wasn't for calculations, I don't care about mileage. It was to get as much fuel on board as I could.

 

[Kevin D Pem]

It wasn't for calculations, I don't care about mileage. It was to get as much fuel on board as I could.

There lies the difference. Having roughly 500 mile range I vote for "none of the above", I got what I've got, and that will not change in my near future (I think") .

 

[team bradfield]

That's about right, I've been averaging 7.5 on this trip, went to Florida last with no toad and got 8 to 9, I hold 63 mph

 

[Rich W.]

So I’d get about the same milage with a Dutch Star. Hmmmm…..