KPIX CBS 5 Eyewitness News At 5PM April 19, 2011
but, for some drivers, old habits die hard. >> when i'm down a mile it's pretty hectic, it's gonna happen and get stuck and get a fill-up. so -- >> the operative word there is yet. experts say to get the most bang for your buck you want to fill up when your tank is half full. when you are filling up the less air there is, and it evaporates quickly. don't pump that gas pedal. could it do more harm than good allen. >> if you have diesel it's even worse than that. >> reporter: absolutely. you don't want to pump any of that gook at the bottom of your tank into your car. it's best to keep...