I'll check my nav mileage against my Mileage as reported on the Dash by the car. I did get a laugh from some post telling me about my car cooling down between my short stops. It's 115F here and at least 150F under the hood so things don't cool off much in a 5 minute stop. As a matter of fact I NEVER see the Blue light except to start in the morning. I know that's not cat temp but you get the idea. Hel* the asphalt is melting on the roads. You dont want to touch a door handle that is in the sun. Ouch! Milage up to closing in on 300 now. I am still living with AC on low By the way the Nissan has an instantanious MPG reading as well as the tank average.

Thanks for the comments.