I've just bought an automatic transmission car (7 speeds), and I am used to drive manual cars. My question is the next: -do you have any advice for ensure a long duration of the transmission?. I mean, sometimes I don't know if it is correct to drive with the overdrive speed at low velocity, such as when I stop at traffic lights. Do you usually put the Neutral when waiting for a green light?. What is the difference between drive and overdrive gears?, should I drive with the drive gear unless I am in the freeway? And yeah, it's a Pontiac Firebird.