Forum Discussion
spoon059
Mar 03, 2015Explorer II
My 4x4 Tundra has a 5.7. Not the same engine, but similar HP and torque. The Tundra is also quite a bit lighter than a 2500 Ram. Best I have ever gotten was 18 mpg going to the beach at about 68-70 mph unloaded. That was on flat ground, highway with minimal traffic. My RPM's never get above 1800 or so... but it takes a good amount of power to push a brick through the air that fast.
I average about 15, but that is with a lot of city-style driving. I might see 5-10 miles on the highway, but spend a light of time either speeding up or slowing down with all our traffic lights.
I think your numbers are pretty decent for a heavy truck and high speeds. Honestly the 6.4 might give better or equal mileage because of the weight of the truck. The 5.7 might need to wind up a little more to keep moving, whereas the 6.4 doesn't need to work quite as hard.
The 5.7 is a good engine and should last you a long while though. Think of how much $$$ you saved versus buying a diesel. That will buy a LOT of gasoline!!!
I average about 15, but that is with a lot of city-style driving. I might see 5-10 miles on the highway, but spend a light of time either speeding up or slowing down with all our traffic lights.
I think your numbers are pretty decent for a heavy truck and high speeds. Honestly the 6.4 might give better or equal mileage because of the weight of the truck. The 5.7 might need to wind up a little more to keep moving, whereas the 6.4 doesn't need to work quite as hard.
The 5.7 is a good engine and should last you a long while though. Think of how much $$$ you saved versus buying a diesel. That will buy a LOT of gasoline!!!
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