im consistently gettin about 16-17 in the city and 18 highway in my 5.2, but i think its got alot to do with the fact mines a stickshift not auto

 

Thats true, I put my stock tires back on and coming from shell to work was27.4 then put my 285's back on from shell and got 25.7, I checked my numbers today on 8 gals and miles was 130 the 285's gave me 16.25 mpg, I wish I could tell you that Ethos failed my test, I have 2 weeks left to see the average I can save, Gas here is 3.79 I put 20 gals in and I hope to see between 18 and 20 as far as Im concerned Im happy at 16 per gal.

 

Mines 99 w/ 5.2 litre and stick shift. Average is about 16 MPG around town and hwy. 14 with the studded snow tires on it in the winter.

Oh yeah. Truck is stock with mods. 111K miles

 

with 285's it will show LESS miles!

 

Huh????

 

yeah that is funny...

 

I think for those who see no difference they are using high end oils & fuels i always used mobil1 and chevron premium and averaged 14s on 34 inch tires.

 

That is funny. Thats going into my sig.

 

runing 87 i get 10 hwy and 6 in town runing 93 i get 14.2hwy and 10in town
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Somethings wrong with it dude. I have the 5.9L, and running 87 or 89 I never got under 9.5 in town, and that was during the winter without my upgrades.