From: "Marc de Piolenc piolenc@archivale.com" <flyrotary@lancaironline.net>
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Subject: Renesis Oil Cooling Improvement
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
References: <listdigest-4350615@logan.com>
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In-Reply-To: <listdigest-4350615@logan.com>
Date: Fri, 24 Oct 2025 23:46:17 +0000 (UTC)

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Oil and water are the two media by which the ENGINE is cooled. Improving 
one (the oil) is going to relieve the other of some of its cooling load, 
lowering its temperature.

On 10/24/2025 6:00 PM, Rotary motors in aircraft wrote:
>    An unintended consequence of the lower oil temps, is that I noticed 
> that my water temps also dropped by about 10 degrees.  In the 
> past when cruising around the temps would settle between 145 and 
> 165 degrees, while today it was between 130 and 135 degrees!  So is 
> there a thermo dynamic reason why lowering oil temps would also pull 
> down the water side as well?
>
>
> Homepage:http://www.flyrotary.com/
> Archive and UnSub:http://mail.lancaironline.net/lists/flyrotary/

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    <p>Oil and water are the two media by which the ENGINE is cooled.
      Improving one (the oil) is going to relieve the other of some of
      its cooling load, lowering its temperature.<br>
    </p>
    <div class="moz-cite-prefix">On 10/24/2025 6:00 PM, Rotary motors in
      aircraft wrote:<br>
    </div>
    <blockquote type="cite" cite="mid:listdigest-4350615@logan.com">
      <pre wrap="" class="moz-quote-pre">  <font size="5" class=""
      style="white-space: normal;">An unintended
 consequence of the lower oil temps, is that I noticed that my water 
temps also dropped by about 10 degrees.  In the past when cruising 
around the temps would settle between 145 and 165 degrees, while today 
it was between 130 and 135 degrees!  So is there a thermo dynamic reason
 why lowering oil temps would also pull down the water side as well?  </font></pre>
      <div class=""><font size="5" class=""><br class="">
        </font></div>
      <br>
      <fieldset class="moz-mime-attachment-header"></fieldset>
      <pre wrap="" class="moz-quote-pre">Homepage:  <a class="moz-txt-link-freetext" href="http://www.flyrotary.com/">http://www.flyrotary.com/</a>
Archive and UnSub:   <a class="moz-txt-link-freetext" href="http://mail.lancaironline.net/lists/flyrotary/">http://mail.lancaironline.net/lists/flyrotary/</a></pre>
    </blockquote>
    <pre class="moz-signature" cols="72">-- 
Archivale catalog: <a class="moz-txt-link-freetext" href="http://www.archivale.com">http://www.archivale.com</a>
Mass Flow (ducted fans): <a class="moz-txt-link-freetext" href="http://massflow.archivale.com">http://massflow.archivale.com</a>
ProZ profile: <a class="moz-txt-link-freetext" href="https://www.proz.com/profile/639380">https://www.proz.com/profile/639380</a>
Substack account: <a class="moz-txt-link-freetext" href="https://fmarcdepiolenc.substack.com">https://fmarcdepiolenc.substack.com</a>
Pinterest: <a class="moz-txt-link-freetext" href="https://www.pinterest.ph/piolenc">https://www.pinterest.ph/piolenc</a></pre>
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