The only really big difference I can see the hot weather making, is if your vehicle has a/c. A/C is a real drain on power and you can expect both performance and fuel economy to take hits from it's use.
If you're not running a/c and since you know you've had some bad gas...errrrr fuel
I'd consider changing the fuel filter.
If you're not running a/c and since you know you've had some bad gas...errrrr fuel
I'd consider changing the fuel filter.
