Antifreeze Mixture

[smcg71]

I was wondering if any one could settle an argument. While winterizing his boat my dad drained the closed cooling system on his Volvo Penta and filled it with straight antifreeze. His argument was if a 50-50 water/antifreeze mix is good then straight antifreeze should be twice as good. I thought i heard somewhere that straight antifreeze was actually more corrosive than mixed. Anyone have an answer to this puzzler?

 

[Trevor]

Re: Antifreeze Mixture

the straight mix will gell and plug the cooling passages dont do it 50:50only

 

[Mumblerone]

Re: Antifreeze Mixture

Use the same as you would in a car. 50:50 is perfect. I do have a question: will he take it out in the spring and add plain water? I'd keep the proper mix in all year long, better heat transfer, plus stuff in there to keep the water pump lubricated, etc.

 

[ob]

Re: Antifreeze Mixture

You'll also get better heat transfer with a 50/50 mix.

 

[JB]

Re: Antifreeze Mixture

I think this thread would better fit the I/O and Inboards Forum.<br /><br />I'll move it.