The otterstat needs to be submersed in order to work properly. With the switch in the up position, air can collect around the thermostat elements in the switch and prevent the switch from closing by insulating the switch from the actual coolant temperature. This would prevent the fans from coming on, risking an overheating condition. Mike --- In dmcnews@xxxx, deloreanernst@xxxx wrote: > The otterstat normally faces down, but I saw a couple at Eurofest that faced > UP. Anyone have a comment on that? > > Wayne A. Ernst > DMCTech Group