CanÆt address the seats or the space, but you should be getting the equivalent or higher with the Sport. Brand new on the stock 265s I was between 19-22 MPG. With 35x12 M/Ts, a SAS, 400K on the engine and a vehicle that now weighs in at just a tad under 5500 lbs. IÆm still getting between 17-19 MPG. Actually, it doesnÆt change when I load it up for camping. My XÆs 3.5L Æ99 got about 20-21 on the highway and my friends Æ98 3.0L does about the same. Neither my XÆs or my friends runs synthetic anything û theyÆre bone stock with the exception of the lock-out hubs I put on my XÆs year before last.

I know that with full synthetic lube in the diffs, t-case, transmission and engine, lock out hubs, a realistic (2.25ö-2.5ö) CAT-back system, the K&N FIPK air filter and the 31ö BFG A/Ts you can get into the 22-24 MPG range in town on the 5-speed Sports. Been there, done that on a couple Æ97-99s.

The synthetic lube brand makes a difference. I run Amsoil for everything except the engine which gets Mobil 1. I have been running Redline in my diffs until this year û that stuff is like pudding until it gets REALLY hot. In the summer where itÆs hot thatÆs not a big deal but in the winter that stuff turns to glue and your gas mileage goes straight to hell. Fun time trying to get my Æ97 to move when itÆs 10 below. :-( Amsoil GL5 gear lube has a thinner consistency but does just as good a job as far as IÆve been able to tell in the last 25 years.

A suggestions - If you havenÆt run a couple cans of the BG 44K through. Odds are it wasnÆt done and the top end may be getting a little gunky. Worked wonders for my XÆs Æ99. :-) Running the BG MOA in the bottom with your oil change isnÆt a bad idea, either.

How many miles does your Sport have on it. I assume itÆs the automatic, yes?

Edward