[Takahashi240]

I don't think anybody here is actually going to know that. There are too many real life variances, anyway: wind, weather, road conditions, grade of your travels. Just go the speed limit. You honestly wouldn't notice a marginal difference a truly optimal speed would produce.

 

[Takahashi240]

Again, every member will have variances, including weight, tires, and even the spoiler.

 

[Takahashi240]

Oh look.. a tired out response.

"Will I get more power out of a cold intake?"
Your reponse: "It depends on if the stars aligned, Zeus summoned a storm, and Michael Jackson comes back to life."

Anyways, sure it shifts around a bit but laws of physics still apply. The actual MPG might differ but the mph at peak mpg doesnt change a whole lot for any given car.

In fact, the "optimal" speed is based on the gearing mixed in with the air resistance, so yes, it does actually vary a notable amount with different places, wind speed, car aerodynamics, etc. It's basic physics. For example, a car in the Rockies might have a trip that is downhill one way, uphill back. You can go faster downhill while maintaining a higher gas mileage, but you'd have to go slower back uphill, if you want the best gas mileage. That doesn't include the fact that due to there being less oxygen at higher altitudes, you will use less gas.

I advise you think before you make a condescending post, next time, because you look foolish and naggy.