Originally Posted by
Kochy
idk that much about diesel but do trucks get better mpg with diesel or? If not what is better about diesel sorry to go off topic.
Diesel has more energy per gallon than gasoline, so you get more MPG out of a gallon of diesel than a gallon of gasoline (that's petrol for any Brits out there
)
It used to be that lower demand for Diesel fuel by the motoring public equated to lower prices per gallon than gasoline, so there was a double bonus.
Now with the word out there on Diesel's better MPG, more people are using it, and it costs more per gallon on average than gasoline. In reality, this is probably what's fair. You're buying energy, and you're getting more, so it probably should cost more per unit volume than gasoline.
That said, diesel is sort of a false economy. The fact that it has more energy per gallon masks the fact that the vehicles that typically use it are heavy and require more energy to move. Your out-of-pocket costs may be slightly lower, but you're using just as much energy or more to move a diesel truck down the road as you do a gasoline powered truck. (Typically, diesel vehicles have heavier engines due to the need to survive much higher compression ratios than gasoline engines. This is what contributes to their longevity.)
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