Please help, my mileage sucks

[AJsStang]

OK, last time I posted about gas mileage and asked a question, all I got was 15 people telling me they were getting anywhere from 22 to 35 MPG with their 4.6. That's fascinating, but I need to know how. I got 13.7 on my last two fillups, and the car seems to running great. Can anyone share some insight on how a GT could have gas mileage that low but still run well (driver's observation only, of course). What can I do to bring it back toward 20 mpg? Thanks.

 

[ChrisWorrell]

i only get 15 if I am lucky, im usually in the 12's, just lay of your right foot, that is about all you can do

 

[holler]

Is there 10% ethenol in your gas in Indy?

that contributes to the less then optimal gas mileage...

 

[brodie2323]

it all depends on where you live. some states use 10% ethanol and then take it a step further and oxygenate the gas all resulting in crappy mileage but a cleaner burn. In NY they do both and I get 16-18mpg highway. when I go to PA and fill up there im getting 27+mpg.

 

[mac1009]

The largest variant in mileage is the driving conditions. My car gets great mileage ~ 24mpg when I'm only on the highway, but once in traffic, I drop to 18. In Atlanta, there's only 2 types of driving, in traffic and in bad traffic, so I don't expect mine to be very high. I would check the little things, air filter, run some fuel injector cleaner, maybe swap the fuel filter. Hope you get it worked out.

 

[dmarco_4u]

My b1tch gets 15mpg when its parked outside in the garage

 

[AJsStang]

Thanks for the replies. I used to make sure about the ethanol.....it depends on what gas station you go to, but lately I have been in a hurry, not worrying about it. Maybe that will help....

This weekend I'm going to do a tune-up and oil change, maybe along with plugs and oil I will change the fuel filter. Is there any fuel filter that anyone here prefers?

 

[Stanglover96]

Yeah I only get 12 on a good day. All I have is a new plenum, O/R H-pipe, flows, and CAI.

 

[mrpositraction]

I changed mine w/ motorcraft, it was inexpensive and in stock. I don't even think about wix, scary. I haven't done that much research or heard too many people talk about differnt filters, maybe this thread will bring useful information.