Im getting real good gas milage. Im getting about 26 city and 30 highway. I check my tire pressure all the time and do a tune up every 3000 miles. Im somewhat a mechanic at where I work I just wanted to know how to save a little cash at the pump. That is why I brought up the engine code "Z" in the first place. But since you all helped me im not considering it anymore. I just need to do a plug wire change I still have the original wires with 117xxx miles. I bought the car with 64xxx miles last january and have had to replace the upper o2 sensor mass air flow sensor. Still have the original trans and never flushed it I need to do that soon. But I installed a trans cooler that I stole out of my old k5 blazer. So im just gonna do a plug wire swap and flush the trans and hope my milage goes up more. I beat the hell out this car. I like the way it performs just want more accleration. Thanx to everyone and there help in advance.
