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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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On Nov 5, 2015, at 08:24, Daniel White <<a href="mailto:healeydan@wowway.com">healeydan@wowway.com</a>> wrote:<br>
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<div>I've searched the archives looking for any discussion regarding how often to change the coolant in the BN7. If the answer is there...I missed it. I'm running a 50/50 mix of antifreeze and tap water and it tests o.k. as far as freeze protection. This
mix has been in the system for a number of years. Does coolant "go bad" with age? Any thoughts about the waterless coolant being sold on the market?<br>
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<div>Thanks,<br>
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<div>Dan White<br>
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<div>1962 BN7 Mk II<br>
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