If you want to save gas, learn to short shift. Here's how I do it in my six speed corvette. Let's say I'm in town and leaving a stop light where the speed limit is 35MPH. I start out in first gear like normal but then I shift directly into forth and bypass second and third. Going from zero to thirty five is a simple matter in first gear and there is no need to use other gears to accelerate. You want to get the RPMs down as soon as possible to save gas unlike you were told by a few people above. Obviously when you need to accelerate to a high speed quickly this is not the way to do it but it will save you gas driving around town, save your clutch and it's much easier on your left leg muscles.