1. Putting fuel additives in your car can help your engine run at peak efficiency. That helps your fuel economy. Slightly, but anything helps....right?
2. Fill up locally. Don't wander around trying to find cheaper gas. All you'll do is waste fuel. If you venture too far away you'll probably pay more anyway.
3.Fill up on Wednesday. Why? Because most gas station operators adjust prices near the weekend. If you fill up midweek you'll save a little. If you wait until Thursday fill up before 10AM.
Make sure you drive within the speed limit and avoid quick starts after sitting at traffic lights. Prices continue to rise and may not come down much at all until maybe May.