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Old 03-12-2018, 04:50 PM   #6
Xsbank
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City: Pender Harbour, BC
Country: Canada
Vessel Name: Gwaii Haanas
Vessel Model: Vancouver Shipyards Custom Aluminum 52
Join Date: Sep 2013
Posts: 2,954
Use any one rated for diesel (I buy the long-term stuff) and buy test strips from a CAT dealer. Then test the coolant (annually) and buy the additives when they need it. Or, if you use a coolant filter, it renews the additives when you change it. DO NOT use pure water. It is imperative that you use coolant.
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