You know, Fanzilla or SpecialTauto's (less expensive) fan fix kits, do wonders to remedy the notorious relay problems and will keep your fans running. I recommend that you invest in either of these products. Anyone will tell you of the dangers of the original fan fail relay (do you still have the original blue relay?) However, what DMC Joe is discussing is the fact that air is prone to enter the system and stop up the thermostadt causing blockage in the cooling system. The cooling system is about 18 feet of pipes from engine to radiator with about 30-40 joins between pipes and hoses, air gets in all the time. DMCJoe sells a device, an automatic bleeder, that lets the air escape into the overflow bottle. I find this little device to be invaluable, it does its job and does it well. Every "member" of the ETDOC has one, and we do mountainous hill climbs at each event we have, we've yet to have an overheat. I fully recommend looking into these products. They saved me a lot of headaches and cured my cooling woes. John Weaver East Tennessee DeLorean Owners Club RED DMC #10527 [Non-text portions of this message have been removed]