I have a friend at our marina that gets the RV/Marine anti-freeze in 55 gallon drums for his business. He orders a couple of extra drums for winterizing boats. He has a powerful electric pump powered by a Honda generator that he uses to pressurize a 50 foot hose with the antifreeze. Having a hose that dispenses anti-freeze at 5 gallons a minute is so handy. He puts the whole assembly in the back of his truck and we used it a week ago to Winterize three 40+ foot boats in 4 hours. These are fairly complex boats with three engines each, up to 4 reverse cycle AC/heaters each, up to 3 showers each, 3 sinks each, livewells, raw water systems, etc. We used the remaining few gallons of pink stuff to Winterize 3 PWCs a couple of days later. If you can pool resources with some other boat owners, this is a tremendously efficient way to Winterize a few boats.
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