for some reason after i did my oil change the DIC says im getting 16-18 mpg in city and 22-24 on the highway

my engine is sucking on the gas tank like its a big gulp!! WTF.

and yes im easy on the go with rpms under 2500 and high way speeds at 65 max

i just dont get it . it used to get 25 city and 32 high way.

i had to fill up twice this week with my normal driving like i do EVERYWEEK

i only had to fill up every week and a half before i got my oil changed . is there something i need to change i dont know about ?

im going to change the air filter tomorrow . and i put a new oil filter in when i did a change with the right amount of oil
just so everyone knows

 

what type oil did you use?

 

penzoil

 

what weight?

 

Check you tire pressure. Keep it near the maximum pressure

 

synthetic oil does make a difference , as well as the weight...i'm using 0w-20w oil now , and i think i will continue , since i found that it increased my mpg...i will also cotinue to use napa gold air filters , unless i install a cold air intake...my mpg is aways above 30 now even if i mix some 80mph runs in on my route.

 

hmmm ill have to try that on my next oil change

 

you also might check the blend and use gas without ethanol....it made a difference with mine...

 

Recently I had the check engine light come on. Before that I noticed the fuel economy getting worse. When I took it to the Dealer they told me one of my injectors was bad. They replaced with the new version? Mine is a 07 2.4. After that it is getting better MPG than when I got it.