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Anti -freeze

What anti-freeze should I put in my lister 3 cyl canal star engine? Is Bluecol ok?

Asked by: Colin Bradshaw  | 3.58pm, Monday 25 September


WW says:

Bluecol will be fine- however if the antifreeze is over two years old (up to four years of no sign of corrosion) the whole coolant should be replaced- although topping up the antifreeze will help stop frost damage, as antifreeze ages it loses the ability to offer corrosion protection.
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Draining the existing antifreeze is fairly easily (removing the bottom pipe from a keel rank) but it can be more challenging to contain it- it must never be discharged into a canal or poured down a drain- but taken to a recycling facility. Most antifreeze is highly dangerous for the environment.
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Many boaters just top up the antifreeze- though ideally it should be diluted before use- and, once the engine has run for an hour or two (and allowed to cool down) then you can use a hydrometer to test the antifreeze level. Ideally new solution every two or so years would be better and reduce both corrosion and sludge build-up in the engine cooling system.

Mark Langley  | 5.00PM, Monday 25 September

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