In the short time I have been using this forum I have learned a lot. P&G, Grill modifications and temperature monitoring, cycling the cruise control when going down hill just to name a few. I drive a lot on the freeway which doesn't help. Using the above techniques my mileage is steadily rising. Averaging 38mpg on current tank. I was spending $800.00 per month to drive my truck. Thanks again to everyone here who has generously shared what you have learned. -Dave