After much consideration I came to the same conclusion. Luckily for me, looks like that particular save didn't take. When I went in to modify it, found that the FA mix was still 14.68. Going to leave that one alone. Starting to think that the Mileage was down due to mileage WAS down due to the extreme cold. Danged thing takes forever to warm up compared to my own electric fan having truck. It's really getting to be time to install electric fans on it, just gotta convince Pop that it needs to be done. Thanks.