20 combined. 93 octane.
Sponsored
Even just the temps going from 75-50 to 50-35 reduced my MPG some.For reference; all my testing is being done using my 26-30min drive to work at right about 9*F. It's a mostly highway drive with several low speed ramps so I call it mixed. The same drive at warmer temps nets roughly 24mpg.
The second it gets cooler out, the milage goes to shit. I am a light-footed driver and you can see where I towed with the truck twice lol. The graph starts when I got the truck last October.
And for our southern friends, that's about 16.6 mpg on average. Best was 22.8 mpg.
[/QUOTE
I notice the same thing about colder temps. Why does colder temps have such an effect on MPG? I know about ‘winter’ gas and all that. We had a week recently where the temps ranged from 15F to 85F and my mileage was affected with the same tank of gas.