4 more ideas:

1) buy everything mail order!
2) draft trucks where possible !
3) use Mobil One (I did notice a difference)
4) if state laws allow, drive with tailgate open..... less drag. Or buy a cover.

John Kennedy
1950 Suburban street rod
Pics in the Gallery.......
new site up!
http://home.joimail.com/~kennedyjp/