Pontiac G6 Forum banner
1 - 1 of 15 Posts

· Registered
8 Posts
Cold air makes the pcm add more fuel to keep the air/fuel mixture correct. So you will always get better fuel mileage in summer or warm weather.
1 - 1 of 15 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.