Engine water temp-What is considered high?
Hi all, I have a 2005 Monaco Diplomat with a 400 hp Cummins diesel, I have owned it for 4 years. It has been problem free and runs great. However, the 4 times I have taken it over the Grape Vine ...
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Depends on the coolant mixture and coolant system pressures, which are essentially manufacturer specifications. Way back when it was 50-50 water and ethylene glycol, running 15 PSI, 240 F was considered hot. More modern coolants can go higher, but the engine manufacturer might not want that (though higher cylinder temperature means greater Otto cycle efficiency).
If a warning system is beeping at you, it means too hot, according to manufacturer's specifications. Get the cooling system checked out, make sure you have good air flow through the radiator, and coolant flow isn't blocked. If it is heating up climbing, gearing down for higher RPM gets you more coolant flow, shutting off chassis air conditioning might reduce the heat load vs air flow.
If a warning system is beeping at you, it means too hot, according to manufacturer's specifications. Get the cooling system checked out, make sure you have good air flow through the radiator, and coolant flow isn't blocked. If it is heating up climbing, gearing down for higher RPM gets you more coolant flow, shutting off chassis air conditioning might reduce the heat load vs air flow.
