i drive a 2000 chevy silverado and i average around 13mpg's and i just added a TBS and the AEM cold air intake, hopefully i gain a few more mpg's

 

I got 19.7 on my last long trip running 80-90 with a clean MAF and filter. And I run 33s with 3.42 gears.
Today I got 16.5 running 70-110 with a very dirty maf and filter, so time to clean them.

 

This is very odd as I just purchased a new 2007 1500 Reg Cab 4X4 short bed and can't seem to get better than 12.8 mpg. I've gone through two tanks of fuel and could not drive it any smoother or slower. I really thought that I would get at least 17mpg as my '03 2500 HD was averaging 14mpg with a 6.0L and I drove it pretty hard. This truck has 3:73 gears and the HD had 4:10's. The window sticker stated 16/20mpg for the 5.3 multi displacement motor. Love the truck but can't believehow horrible the mileage is. To think I did'nt even go near the Dodge's because I thought their mileage ratings were misleading.

 

If that's truely the case, I'd take it to the dealership to have them once it over. You've gotta fresh warranty. Just tell the service advisor what kinda gas mileage your getting and they'll know something is wrong. Shoot my 03 Sierra has the 4.8 and I still get 14-15mpg when driving it like a maniac. Mine averages about 16-17 if I'm REALLY trying to conserve it.

 

The new trucks need to break in. Your going to get progressively better gas mileage as the engine breaks in and you'll notice smoother idle and quicker response too. I can't remember how many miles it takes. Argon will know.

 

full on engine break in period from new is said to be 500 miles. the factory also recomends not going over 55 during that break in period.

 

I get about 13-16 (town-highway) on a good day with my '04 1500. The only engine mod I've made is descreening the MAF. Haven't put a K&N drop-in yet, but I can't see it making that much of a difference. Didn't damage the MAF, not sure why the mileage is so crappy.

 

my k&n gave me a solid 1 mpg in the city... not a big difference... but its something

 

8-10 mpg here.

 

my truck's milage blows! i figure for 26 gal tank i got 450 out of it driving missy daisy on the highway. it comes out to 17 mpg. i figured a v6 would be way better but with a heavy foot and heavy truck, what do you expect?


ACR- does your name by chance mean Alachua County Resident? if not and for the rest. it's a gainesville thing the lifers call themselves.