How Your Car's Computers Can Improve Your Gas Mileage

[Scott O'Kashan]

http://www.jsonline.com/sponsoredar...ove-your-gas-mileage8085490102-240224811.html

 

[fishycomics]

the older type engines back in the 90's did the trick. with todays hybrids the computer and batteries are key.

 

[Donabed Kopoian]

Upstream O2 sensors. I change mine every 60k miles. Waiting until they throw a code will slowly degrade your mileage.