Do u have like 20" lift and 50" tires lol. :-D had to be a smartass too

 

x2 It's like the 80's all over again.

 

truck actually runs pretty good the 02 sensor is right behind manifold sounds messed up but the gas is going somewhere and I have no leaks

 

I would almost put money down that someone is taking your gas. 80 miles to a tank just doesent seam possible.

 

Buy a locking gas cap and see if your mileage improves.

 

My buddys jeep with a bad o2 sensor got 12mpg and he is all stock some one has to be stealing your gas or youve got it floored every where you go and are doing warp speed

 

Any chance your tank is leaking and you don't notice it because the gas is evaporating before it hits the ground?

 

Are you sure your gas gauge is accurate?

 

i have a 13 gallon tank from the factory on my 92 and i run 35's with 3.55 gears auto trans i get about 80 LOL

 

The o2 sensor is on the manifold. The oil smells normal and i had same problem with old sensor so probably not bad sensor. I was getting 14 to 16 miles per gallon then just all of a sudden it started to suck the fuel. Im gonna change head gasket cuz im sure it needs to be changed anyways.