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timmac's avatar
timmac
Explorer
Jan 22, 2020

The Verdic is in, New Ford 7.3 V-8 Gas mpg not so Great

5.5 to 6.1 mpg while pulling a load, looks like the new 7.3 V-8 gets about the same mpg as the 6.8 V10..

Different motor same mpg, looks like the gas motorhomes are still stuck with bad mpg..


https://youtu.be/qbXFrZsiAQE

:Z

35 Replies

  • It was silly to expect significant difference.

    Go look at the guys with the 3.5 ecoboost...does great with an empty truck but load it and it does about the same as the V8.

    Why? It takes fuel to develop power and when putting out a significant percentage of rated power, engines have been optimized for a long time...not a lot of improvement available.
  • Fuel mileage, and RVing do NOT belong in the same sentence. Gonna play. you got to pay.
  • I'm not even a little surprised. BTUs are BTUs. Big trucks with big engines use a lot of fuel, nothing new there. The real test will be how well does it do in MH duty. My guess is it will be a real nice improvement.
  • Those who want the big horses will pay the big fuel bills. I’m not surprised. I didn’t buy three GM 454-455s back in the day for economical reasons.
  • Yea Tim, I would of thought that 10 speed tranny would of made some difference, but like they said they couldn't get into max overdrive with that load. I'd like to see a test with a more realistic load. The other issue is they lost a little power and mpg by going back to port injection. There have been serious issues with direct injection. I think I'll keep my diesel. Don