Though we have touched on such topics in the past, it doesn’t hurt to have a refresher course. And so we piggyback on an interview by ForbesAutos with Wayne Gerdes, a “hypermiler” who can squeeze 84 miles per gallon out of his Ford Ranger pickup truck.

Here are 10 of Gerdes’ techniques for achieving above board fuel economy:

1. Turn off the air conditioning

2. Install a scangauge

3. When pulling into a parking lot, try to coast up to the highest point in the lot, so then you can coast out upon exit

4. If you’re idling over 10 seconds, turn off the engine

5. Driving over the speed limit increases wind resistance, consuming more fuel

6. Rather than trying to maintain a constant speed, focus on maintaing a constant engine load

7. Drive like you have no brakes; coast whenever possible and avoid needless braking

8. Change your air filter yearly

9. Use the lowest weight oil recommended for your car

10. Inflate tires to maximum pressure

Via Consumerist.