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    Drain process

    Hi, The system is open (raw). The engine is a 4.3l V6 mercruiser (petrol - fuel injection) on a a 1991 Searay 290DA. There are 2 engines but assume the answer will be the same for both.
  2. S

    Drain process

    Hi, advice please... I have been trying to winterise my 4.3 v6 Mercruiser engine. This one has a drain tap to open and a couple of plugs to remove. However, when draining the water, it seems to go on forever. I was draining for at least 25 mins with a good flow. Did this last year but the boat...
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