This year i will be taking my 1997 I6 Grand Cherokee on the beach at least twice a week fishing. I am concerned about the transmission temperatures especially on those hot 90 degree plus days crawling along at 10mph. I do not have an aux. cooler and was wondering if i should get one with an electric fan. Since i will be moving at a slow pace there will not be much of an air exchange for the cooler to really be effective. Has anyone here installed a cooler with an electric fan?