13 MPG IT DOESN'T MATTER. EMPTY OR PULLING 4500LBS OF EXTRA WEIGHT OF MY TRAVEL TRAILER.

 

2001 Supercrew 4.6

Average highway 17-18

Best mileage 20.4

ethenol blend 89

gonna try regula 87 octane gas next to see if it improves

Skip

 

14 mpg reformulated

Went 300 miles to almost E, 21.3 galons.
600 miles on Auto-RX.

 

12.something all city
15-16 highway

2002 supercab with 5.4 and 4x4
chip / exhaust / intake

it's a greedy pig on gas!

Habibi

 

18-19 mpg Hwy / 15-16 mpg City

1997 4x2 SCab w/ 4.6L V8 3.55LS

Most recent trip: mixed city & Hwy 17.8 mpg

 

5.4L 4x4 Supercab. AirForce One intake w/ Tornado, Flowmaster Exhaust

slightly over 16 mpg highway at/under 2000 rpms
slightly over 15 mpg highway over 2000 rmps (2100 at 79 mph)

15s for "tame" city driving.


fyi, I found that w/o the Tornado, I get about 1mpg less, and the truck has to downshift a whole lot more to maintain the cruise control setting up hills.

 

typo

 

Just performed my first fillup. 14.54 mpg

2003 King Ranch SCrew
4x4
5.4L
Flowmaster Catback

 

Went to AZ last weekend.

15 mpg
5.4L supercab 4wd
average speed 85
all freeway with lots of grades
From Ontario, CA to Quartzite, AZ

 

went around town...11 MPG on this tank! Damn city driving!!!

 

01Lightning...last fillup of premium amoco...
13 mpg (city/highway combined).

 

Rarely get 19 MPG, even all highway. Got 19.2 all time best all highway 65MPH.

Got 18.3 Santa Barbara - San Diego and back last weekend, 364 miles, 75 MPH. May have had non-reformulated gas - they switch over this month in SoCal I believe.

16.x mpg usually mixed. Maybe .5 mpg less with the reformulated gas (87 octane).

All time worst 14.5 mpg highway Las Vegas - Salina Utah into high headwind. 75 - 80 MPH. Was cold out - 35F. Suspect it was reformulated gas, bought in Vegas, they have a smog problem.

'01 5.4L Super Cab, 4x2, 3.55 LSD, 26K miles.