Thread: ques about winterizing an in/out board motor
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John H.[_4_] John H.[_4_] is offline
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First recorded activity by BoatBanter: Apr 2008
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Default ques about winterizing an in/out board motor
On Tue, 27 May 2008 16:40:01 -0700 (PDT), wrote:

I just realized they don't use a radiator and only circulate the
water. If the block is drained, why add antifreeze?

If you are sure every little crack and crevice in the engine is drained,
then it's not necessary. As the owner for about eight years of an I/O 5.7L
Mercruiser, I had the antifreeze added every year - even with the global
warming.
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John *H*
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