[JL8Jeff]

I ran without the AC belt for over a year and I definitely saw a small increase in gas milage(.5 mpg) so that should tell you there is some drag spinning that pulley. Even without the compressor engaged, it's a heavy pulley to be spinning for no reason. I never had any issues with the defroster in the winter, but it won't work as good. Obviously, that's not an issue if it's not a daily driver. I don't use AC but I put the belt back on so the defroster would work in the summer when it fogs up on rainy days. I bet there's a good 3-5 hp to be found.