19. 5 sounds pretty good. What's the milage on your truck? When new, my '02 H. O. 6 speed with 3. 55 gears and a weight of 7400 pounds was getting in the mid 16s mpg(calculated by hand). Now, at 9000 miles I'm up to mid 19s. About 75% of my driving is at highway speeds, the rest is around town. I have a cab high cap on the back. Tires are 265/75R16. As far as driving habits go, this truck is VERY fun to drive if you catch my drift. Just switched to synthetic rear axle lube, so according to some I may see an increase. No other mods except M. E. kit from Geno's. By the way, with a build date of 11/12/01, my truck came equiped with a front axle disconnect.