any refigerator repair place (the one in your kitchen) has a sniffer that smells for leaks in their lines.. maybe you could finagle them to look around your car with the sniffer
big as fan as you can get but watch amperage so you dont burn a alternator..
just put a electric fan on mine its 94 outside and my water temp went up a little bit but im happy
mite be me but felt a little more energetic when gettin on the gas too