What is the rpm sweet spot for highway driving

MOPEkidD-3 said

I didn't mean YOU had a problem not wanting to speed, the "problem" i was referring to was it being costly.

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Without OD, it certainly is more costly. Even with OD, I don't drive much if any over the limit. I'm done with tickets. They are a totally avoidable waste of money.

To the OP. My apologies for getting this side tracked.