Fuel economy at 65 mph vs 60 mph
What fuel economy increase have you observed from pulling your fiver at 60 mph vs 65 mph?
Forum Discussion
ACZL wrote:
You're pushing the same amount of air out of the way at 60 mph as you are at 70 mph. Technically, like others have said, going slower will net a bit better mpg's, but overall with today's engines (specifically diesels), they are designed to be most efficient around 65-70 mph.
Drag cubes as speed squares. Can't get out of that exponential difference.
Lyle
