am i hurting my car? Options

[chandy1986]

Hi i'm Chandy. I was wondering if they way I drive can hurt my car. Because my car has a 7afe I'm trying to be very economical. So I shift really early. What happens to my car if I drive it in the low rpms? I'm a little worried about the water that comes out the muffler because it is below freezing here in mass.

[jason]

get a vacum gauge, if you can keep it to specs you will get best gas milage =) otherwise, gas milage usually goes by strain - aka if you are in low rpm but needing lots of power the engine will put in mroe fuel, so in some cases raising the rpm will be more efficiant~ less fuel used i usually shift anywhere from 2k-5k for normal driving, and depending on how im driving, higher the revs the more wear you put on your valve train, the lower the more you put on your bottom end i belive, so somewhere in teh middle is ideal