low gas mileage

[mudslogger]

Hey i changed my oxygen sensors then i check my mpg and i am still gettin only 12-14 i have a 1993 ford ex any suggestions to what could be the prob?

 

[Alec]

Any other symptoms?

How's it running; at idle, cruising, WOT?

Do you seem to be running rich at all?

 

[mudslogger]

after i changed the o2 sensors it runs alot smother it accelerates grate doesnt seem to have any symptoms of any

 

[poconosms1]

Assume you cleaned the MAF, added K&N Filter, Platinum Plugs, new cables. Did you reset your computer after changing the o2 and cleaning the MAF?


Could it be your driving?

Try driving the truck for a tank with not letting the RPMs pass 2,500 - 3,000 max. Use the cruise control as often as possible, but not on start up

 

[mudslogger]

lol i did all of that when i changed them, i think it is because i put the wrong oil so it's taking more gas the turn the engine i picked up 1 5w-30 then the rest were (4) 20-50 thats what i get for not looking

 

[Alec]

Well try changing the oil then

 

[kontinu1]

i use 10-30 what is the advantage of using 5-30? Should i use it also?

 

[plrs x45]

changing the egr netted me 2mpg. 5w30 is for winter because it is thinner. stick with the 10w30 for all season.

 

[Mike]

welcome to my world of poor MPG =[

 

[Alec]

Hey, y'all can't complain!

Troll and I can get as low as 6 or 7 mpg! I usually get about 12-13 city and 15-22 hwy though. He averages about 10 mpg. That's the tradeoff with 600 hp I guess

 

[aldive]

Originally posted by kontinu1
i use 10-30 what is the advantage of using 5-30? Should i use it also?

Better gas mileage. I highly recommend synthetic oil. I have recently changed from 0w30 to 5w20.

 

[mss4mu]

5w-30 vs. 10w-30

Actually, as stated earlier, 5w-30 is for winter, however, it's actually thicker than 10w-30. It doesn't freeze as fast that way. If you live in warmer states (Texas, Arizona, etc), 10-30 is all you need. And it doesn't take as much to turn the motor.

 

[mudslogger]

ya if i use synthetic oil my truck sometimes leaks so i stay away from that