Hey all. For those that haven't read my introduction, I drive a 1994 Jeep Wrangler. It is the 4 cylinder, 5-speed model and has betwen 130,000 and 140,000 miles on it. When I first got it, it was averaging me anywhere from 13 to 15 mpg. Since the EPA estimates for it are 17 city/18 highway, I've been checking into the usual maintenance items and replacing as needed. Thus far, I've done the plugs, wires, cap and rotor. I plan to do the fuel filter and air filter within the next week or two.
Basically, my question is that if I manage to get the thing running peak again (approximately meeting the EPA estimates) about how much more of an efficiency/mpg improvement could I expect with the following mods?
- Partial grill block
- Air dam
- Synthetic lube in the engine, transmission and differentials
- Heat-resistant exhaust wrap
- Folding in or removing mirrors
- Airing tires to max
- Keeping highway speeds to 55-60 mph
That is pretty much my big list of ideas for the Jeep. I just wanted to see what you guys thought I could gain from that. Thanks for any and all help.