How do I get better fuel economy?

[AdamG]

1999 GMC Sonoma

4x4

4.3 V6

Auto Trans

Ext Cab

A/C

 

Currently, my best mpg is 17-20.... I'm looking to bring my average up to about 22mpg.

 

Any ideas how?

 

I already installed a K&N Air Filter.

I use Valvoline Synthetic Oil.

I have Arizonian Silver Edition Tires.

Tires web page

 

What else should/could I do?

 

Thanks,

Adam

[firecadet613]

Drive about 55 lol. I got 13mpg going about 85 towing my Sea Doo from Indy to Denver just two weeks ago, I average 15 in town. That was with Dino oil as my motor only had 3000 miles on it, just put Mobil 1 in today

[Tex2kZR2]

Drop the tail gate...

[AdamG]

forgot to mention...I have a hard fiberglass bed lid / Tonneau cover

 

http://cybox.com/~aramus/truck.jpg

[bowtie_pasta]

Use cruise control (if you have it) whenever possible. Seems to help on my long roadtrips.