New boat to me, Catalina 350 with Westerbeke M35b in it. First boat I've had with a water heater in it. Not sure what the engine coolant is in the engine closed cooling system. I do know that it is reddish or orange (so suspect dexcool). I do know that it tested to -50 on the EG scale on my refractometer and -30 on the PG side, so not concerned about it for winter, but will likely flush and replace it next season.
Since there's a water heater involved, should I be concerned about possible leaks into the fresh water system, and use one of the PG coolants like Starcool or Fleetguard's heavy duty PG coolant? Or should I just use one of the global EG coolants? Or something else? So many choices these days...
Since there's a water heater involved, should I be concerned about possible leaks into the fresh water system, and use one of the PG coolants like Starcool or Fleetguard's heavy duty PG coolant? Or should I just use one of the global EG coolants? Or something else? So many choices these days...