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Richard,<br>
not to sound argumentative, but the seawater systems/heat
exchangers or what ever name are vastly different systems, but the
engines are still subject to the same conditions as our cars and
preventative maintenance should be a higher priority in off shore
capable boats. Those boats using fresh water systems are highly
prone to coolant system issues too. Mostly due to different temps
across the heads, but also lack of pump lubrication... IMHO<br>
dp<br>
<br>
<div class="moz-cite-prefix">On 11/5/2015 8:05 AM, Richard Collins
wrote:<br>
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<div>I am running the same <br>
50/50 mix in my BN7 but am using distilled water in lieu of tap
water. It hasn't been drained in a number of years except to fix
a leak in the original still used radiator several years ago.</div>
<div id="AppleMailSignature">FYI my water cooled Porsches have
coolant more than 5 years old and no issue. I have captained
large motor yachts and the multi gallonage coolant in their
engines are seldom drained.</div>
<div id="AppleMailSignature">So age is not the issue IMO</div>
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Regards,
<div>Richard Of Ky</div>
<div>BN7 #440</div>
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