Coolent mixture

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oceanblues

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Jun 23, 2011
7
Out of the blue Catalina 320 Dana Point
I just purchased a 1994 Catalina 320 and was changing the Coolent but not sure how much water to mix it with. The manual doesn't indicate. She has a Perkins 29 hp diesel engine. Any help would be appreciated.
 
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CCHer

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Jul 7, 2010
230
Beneteau 37 Cranes Creek, VA
I use a 50-50 mix of Sierra or some other low tox antifreeze. The bottle usually will tell you what porportion for the desired protection level.
 
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Big Windy

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Jun 2, 2004
1,077
Several Catalinas C25/C320 USA
50/50, just like a car. Be sure to premix it in a gallon (or two) container, that way you can be sure the mixture you put in IS 50/50.
 
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