shawnx92

i have a 2006 4x4 5.4. I have a roush intake a flowmaster exhaust. Im getting bad millage. Like 12 to 12.5 usually. I am not hard on the gas pedal, Just your average around town daily driver. What can i do for better millage or why is my millage currently so low?!?

quarantine

Because my truck is truly awesome. I really don't know how or why,but it does it. Its even better on a long straight drive. Last time I did that I averaged 20.7 mpg.

FrozenTundraGuy

Mobil says it is equivalent to 5W-20 and meets the OEM specs for Ford/Chrysler. I'm not worried about the oil protection it will provide, just wanted to know if it helps over the 5W-20 oil.

quarantine

I am referring you to the master of oil.
www.bobistheoilguy.com/forum

I have met Bob The Oil Guy. This dude knows more about oil than anyone I've ever heard of. I have even helped him do some testing alongside a friend of mines dad,who is an oil analyst. They have all the answers.

BJV269SS

Mine does the same MPG if I just drive around town. Going to work It will do 15+ with a steady throttle at 50 MPH. Hills will kill that though. 20 MPG on the highway.

Jasper

i'd love to know what you're doing different. 06 w/ 72k miles on it, 4x4 w/ the 5.4L.

my mixed city/highway TOPS OUT at 14.5mpg. thats in 2WD, 45-70mph depending on traffic.

got a magnaflow (muffler only) and a K&N. dealer suggested going back to the stock intake per mileage.

what are you using for gas? (i notice we're in the same neck of the woods)

lddrew

12

Fx4Nick04

14 no matter how I drive

Appstate19

I get better mpg in my 07 5.4 running around 80 down the highway then i do down around 60. I've checked it several times? Works for me though

BkoJoe

I go From Freeway to city streets and i just did approx. 1/2 tank avg of 12.95