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Old 10-17-2022, 06:35 PM
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ndutton ndutton is offline
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The MMI recommendations for winterizing* mention removing the thermostat and pinching the bypass hose closed to be certain antifreeze gets into the block thoroughly.


*The recommendations are found in the General Maintenance forum category, "Winterizing your Atomic 4" sticky thread, post #1. The note I'm referring to is found under "Cooling System", the Note following Step 2.
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1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
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