I'm sure this comes up alot now, but I really don't know whats left. after a recent 500 mile trip highway driving at average 75 mph I'm getting 16 mpg. I changed out the sparkplugs right before to autolight copper ones, I have k&n filter which I clean, tires are inflated to about 35-37 psi. What else can I do, I have a 06 SLT with 27000 miles

 

thats the problem, 75 mph. for every mph you go over the speed limit you loose alot of gas. i went and saw joe in new jersy from ct and it was about a 500 mile round trip. filled up the night before and no issue keeping truck at 65 mph with the a/c on. all highway traffic and did not have to stop and fill up. i got a good 20/21 miles to the gallon even with the 4.10 gears. its all about how steady you drive, and keep in the same lane as possible, swerving in and out of traffic is not a good gas saver either. also i run the 93/94 octane because of the upgrades. try switching octanes. to fill up the truck between 87 and 93 is only gonna cost an extra 4 dollars. the lower the octane the faster burning the fuel is, which is good for the import junks but the higher the octane the slower it burns, getting better mileage and better power.

 

There was a whole thread about this earlier:
https://dodgeforum.com/forum/showthr...ht=hypermiling

Try some of the tips there, if possible.

 

great thanks, yeah thats what I figured, I have a 300 mile trip soon, so I'll try driving at 65 and see what I get

 

Sell it thats what I did LOL. Getting 24 mpg city and 30mpg highway in my jeep patriot. The best mod I found that helped was installing an electric fan. You gain some hp and probably a good 1 to 2 mpgs.

 

Same way some of us get 22 mpgs on their Dakota's, and some only get 18...variability. The Patriot's offer four different engine/tranny combos. Depending on what you have, you can get 22-28 mpg highway and 20-23 mpg city....might your g'ma have the bigger engine?

 

We all know there are a lot of factors that play into mpg's. I have the auto trans 4x4. The only engine mod I did was add a k&n drop in filter and mobil 1 full synthetic oil. I also use some hypermiling technics. I coast down hills and try not to brake too hard.

 

can u say 4 cylinder--------!!!!!! lol