advice, what to do with my 5sfe Options

[95gtschick]

not looking for more hp or anything, but here are my problems:

-start up in the morning lots of white smoke comes out of the exhaust, but never any other time.

-awful gas mileage - lucky to get 280miles to a tank

-replaced spark plugs... didn't make a difference with gas mileage, but stopped my backfiring kinda.

-noticed that a wire was spliced into one of my ignition wires, thus leaving it with a lot less resistance.

-high miles, odometer says 116k, carfax report said that january 2003 my car had 130k miles (odometer has been rolled back).

-burn a little bit of oil

I don't have an exhaust leak, i already got that fixed, i don't know what else to do. Gas mileage right now is my main concern, cause it costs me $50+ to fill up, and it barely lasts a week and a half. What would you guys do? I just want some advice. Thanks

[presure2]

see the problem is most people look at it and see white smoke, like nick.
when in reality, its light blue smoke, (oil) caused by leaking valve seals.
which is VERY common on our cars.