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293 Posts
I towed a Mazda Miata on a dolly for 600 miles up and down hills from Louisville, KY to Jackson, MS with no problems. Although I made sure I turned off Overdrive before I got to the really steep hills, as to keep it from hunting. I averaged 18mpg at an average of 65mph. I looked at the tranny fluid from time to time to make sure it wasn't getting burnt. My truck had no towing package, and as far as I know no tranny cooler. My truck has been just fine for the last month since.