Thread: Radiator Flush
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Old 12-18-2018, 12:03 PM   #13
firehoser75's Avatar
City: Nanaimo
Vessel Name: former owner of "Pilitak"
Vessel Model: Nordic Tug 37
Join Date: Feb 2018
Posts: 1,649
Easting. I agree that there is no need to flush if you regularly change the coolant, and I also am a big believer in the benefits of freshwater flushing of the salt water cooling system. I do it as often as I can (takes less than 10 minutes) and leave the boat with a freshwater with Salt Away mix in it all winter.

However, even with that preventative regime, I still recommend regular (although regular freshwater flushing coupled with the proper aftercooler reassembly including pressure testing will reduce the required full maintenance frequency) aftercooler maintenance at least every 3-4 years. Freshwater flushing will not clean the air side of the aftercooler and dissimilar metal corrosion can still become an issue.
I agree totally with you, but I was also wondering whether Helm was also flushing the coolant side annually as well as replacing coolant. Just curious
Nanaimo, BC
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