SunSet Chevy in Sarasota, FL.

 

at 75-80 from here to houston which is 200 miles

 

Wouldn't keeping the tires pumped to the max. (or slightly over) inflation pressure help reduce rolling resistance? Yes I do realize that as the tires heat up the pressure rises.

 

That is pretty good then. My milage goes down alot after I pass 70mph.

I just did a test on a 3 hour hwy run, about 330km and got 8.1L/100km which is 29mpg (US) and 35mpg (CDN).

That was at 110km/h or about 68mph.

Now, It is winter here, I've got snow tires on (not the stock nitrogen filled), it was windy and rainy. Not sure how much all those things effect it but I would expect to get a bit better milage in the summer in good weather with the stock tires back on.

All this info was from the DIC, I am going to fill up today and calculate it the old fashion way to see how accurate it is.