Greetings all. Have been lurking for some time. This is my first post here. There was a great post here on winterizing a Swift trawler with lots of good info.
I have a few questions soley about the engine raw water system winterizing process. I always like to check the discharge from the exhaust with a refractometer but an underwater exhaust makes that impossible.
1. The 6 cyl yanmars have 5 gal cooling system so I am guessing it would take a minimum of 6 gal to get full concentration. How many gals are folks using?
2. To check the concentration is correct after flushing, where is the best place to take a sample? Ie the heat exchanger?
3. How are people feeding the antifreeze into the engine? The plastic vetus strainer will not take a Sea Flush and the 1 3/4 inch hose must be a bear to remove and flex into a bucket of antifreeze. Pouring antifreeze into the strainer had been suggested but doing that next to a running engine fast enough and without interupption I think would be very difficult. I like the idea of installing a tee but what type and diameter hose will work?
Thank you.
I have a few questions soley about the engine raw water system winterizing process. I always like to check the discharge from the exhaust with a refractometer but an underwater exhaust makes that impossible.
1. The 6 cyl yanmars have 5 gal cooling system so I am guessing it would take a minimum of 6 gal to get full concentration. How many gals are folks using?
2. To check the concentration is correct after flushing, where is the best place to take a sample? Ie the heat exchanger?
3. How are people feeding the antifreeze into the engine? The plastic vetus strainer will not take a Sea Flush and the 1 3/4 inch hose must be a bear to remove and flex into a bucket of antifreeze. Pouring antifreeze into the strainer had been suggested but doing that next to a running engine fast enough and without interupption I think would be very difficult. I like the idea of installing a tee but what type and diameter hose will work?
Thank you.