If you have the Motoraide function with your Hydro-Hot unit you will have a switch labeled ENGINE PREHEAT at the control panel. This operates a separate pump to circulate hot fluid through the engine cooling system.
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Bob Retired Army Traveling alone now, had to put Charlie the Beagle down :(.
2008 Camelot 40 PDQ 4 slides ISL400 towing a 2020 1500 GMC Sierra Denali 4x4 Crewcab
Western MT in summer, AZ, NV in winter
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