That's why I was asking, I thought that Tornados were somewhat of a joke but have surprisingly heard from a few that they work, which could be do to other unassessed factors. We don't carry them here because they don't have the proven results enough for us to offer them.

 

I look at the tornado thing this way: if they worked the auto manufactures would have them on stock vehicles as an easy way to boost fuel economy ratings.

 

I'm getting 15MPG in town and 21 MPG on the highway without a trailer. I ordered it back in August and took delivery the last week of September. I have 3100 miles on it as of now.
Randy B

 

At what highway speed is that?

 

70MPH + or - 2

Randy B

 

Well I got the build date for my EB EL 4x4 as sometime during the week of 1/22. The dealer said I should see it withing 10 days of the build date. I'm crossing my fingers since I have to go out of town the second week of Feb.

I always drive 8-9 mph over the limit so I'm hoping I can pull 19 mpg out of her. Once she's broke in I'll be running Mobil1 and sometime during the summer I will build a set of headers for it to see what kind of power and mpg improvements I can get.

 

I just let the dealer change the first oil for free with the standard fare oil. The next change and on, I too will be going with MOBIL 1. I am a true believer in the stuff, ever since my racing days with turbos.

Randy B

 

There's only about a 200-250 lb difference though.

 

I'll need to check the stats, however I believe the rear gears are different. Mine is a 4X4 non-EL.

Randy B

 

I got the 2WD EB EL edition with the extra capacity towing package and it comes with the 3.73's. I may be upgrading those to 4.88's tho since I'm going to be doing some mountaing climbing next year with about 7-8000lbs hooked to the rearend.

currently with only 500 miles on the odometer I'm getting 14mpg around town.

 

From the Ford site.


Standard Trailer Tow Capacity
Non-EL EL
Engine Axle Ratio Max. GCWR Max. Trailer Weight (properly equipped) Axle Ratio Max. GCWR Max. Trailer Weight (properly equipped)
5.4L V8 (4x2) 3.31 11800 6,000 lbs. 3.31 12200 6,000 lbs.
5.4L V8 (4x4) 3.73 12100 6,000 lbs. 3.73 12400 6,000 lbs.




Optional Heavy- Duty Trailer Tow Capacity
Non-EL EL
Engine Axle Ratio Max. GCWR Max. Trailer Weight (properly equipped) Axle Ratio Max. GCWR Max. Trailer Weight (properly equipped)
5.4L V8 (4x2) 3.73 15000 9,200 lbs. 3.73 15000 9,000 lbs.
5.4L V8 (4x4) 3.73 15000 9,000 lbs. 3.73 15000 8,750 lbs.

 

I have the optional HD Tow Package and 4X4, so 3.73 it is.

Randy B

 

I got a limited regular size tow pkg 3.73's 2wd last week and its avg is in the 11-12 range. how long till it breaks in and i can start to see a change? i drove a long trip for new years and now have almost 800 miles on it. should i start to see a change?