I need to add coolant to the Raptor 440 coolant tank and can't find the Indmar coolant locally, dealer is a 3 hour round trip. I know the manual calls for 50/50 propylene glycol and distilled water, but finding pure propylene glycol ain't a day on the boat! Are there any readably available substitutes for the Indmar coolant, or 50/50 premixes like they offer for auto antifreeze that would be suitable? Thanks.
Comment