jaquima

Love my 2001 8.1L with 4.10 gears. After 21 years, I would not change my purchase for a diesel just because it gets bad gas mileage. Every winter running 87 octane, I get 10-11 mpg mixed driving. Every summer running 87 octane, I get 12 mpg. If I run midgrade gas, I pick up 1 mpg and a more enthusiastic engine response. It has had the common minor repairs but the engine behaves exactly the same way I drove it off of the lot. I have 165,000 and it starts every morning, regardless of the conditions. I tow a 13,000 lb gooseneck horse trailer when fully loaded. The truck handles it nicely as long I keep putting gas into the tank. When I tow it averages about 8-10 depending on the elevation gain of whatever pass I am traveling over. I am not the fastest driver since I want to give my horses a nice ride so the fact that I can't go 80 mph over a large pass is a non factor. I am starting to look at a replacement and wish GM would do another big block. The Allison has been worth every penny. I would look no further if GM paired any gas engine with the Allison.