I have been playing around with the best fuel economy on my drive to work now and have found that in 7th gear the car consumes more gas even at lower RPM then running in 6th gear from speeds of 70 - about 85..... now unless you are scooting along at about 95 or 100 I really dont see when you would use that 7th gear..... Have you guys played around with this at all?
The trucking industry is having the same issue. The trucks that get governed to lower speeds get worse mpg then trucks without goveners. And you always run in your high gear at highway speeds.
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