Gas or Diesel
My Son is looking to get a 2015 Ford F-350 CC SB. He's trying to decide between the 6.2 gas or pay extra for the 6.7 diesel. He currently has a 6.0 diesel so he knows how the diesel pulls. ...
Forum Discussion
pnichols wrote:
I wonder what makes some think that diesels don't "gobble the fuel" when pulling loads up long hills with their turbos boosting away???
The energy has to come from somewhere .... most likely the fuel tank.
By the way, here's the engineering equation for where horsepower comes directly from. Notice that the equation does not care whether one is talking about a diesel or a gasser engine that's making the torque from power -> horsepower. But what it doesn't show is that a diesel pulls DIFFERENT, not BETTER than a gasser when both have equivalent horsepower. Preference is everything and Detroit has made sure (other than Ford with the good old V10) that the preference winds up being diesel because they (or maybe the EPA) refuse to make a pulling gas engine:
Torque = Horsepower X 5252 / Revolutions Per Minute
(For one exception example, see my earlier post above about a 1965 Ford I once owned that had a pulling gas engine.)
More than like because a diesel gets about 30 to 35% better fuel economy.
Or a gallon of diesel has about 13 to 15% more energy/ gallon than gasoline.
Or a diesel engine has virtually no pumping loses because it has no throttle plate.
So are you saying with your HP formula there is no difference between fuel burning rate with different fuels? If so, LOL.
Here is some news for you:
BTU's for diesel is right around 129,500/ gallon
BTU's for gasoline is right around 112,00/ gallon.
BTU's for methanol is right around 57,000/ gallon.
BTU's for nitromethane is right around 47,000/ gallon.
Now, do you really think you will get even close to the same fuel mileage if you use lets say methanol instead of gasoline?
Or do you think you will use around twice the amount of methanol than that of gasoline because gasoline has around twice the energy/gallon?
Like I said; with my 600 hp supercharged engine I burn about 1.25 gallons of gasoline / 1/4 mile. That is 5 gallons/ mile........not 5 miles/ gallon. :E
Good luck selling that to the public for a towing vehicle with those MPG figures. :B
