I have a 2008 holiday rambler imperial with a 425 isl My hydraulic fan cooler was covered with a red fluid I assume was hydronic fluid. The Reservoir was low and fluid was coming out of the side radiator and getting all over my tow vehicle we pull the Hydraulic fan cooler off and took it to a radiator shop and he could not find any leaks does anybody have any ideas where the fluid might be coming from are going