<div dir="auto">Oh no ... not engine oil again ...🤪</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu., Feb. 24, 2022, 12:35 p.m. warthodson--- via Healeys, <<a href="mailto:healeys@autox.team.net">healeys@autox.team.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="color:black;font:12pt Comic Sans MS,sans-serif">Bob,
<div>If Dynolite does not work, I would try 20W50 motor oil. I have read that it is an excellent heat transfer agent & should also be good for the water pump bearings. Also, any leaks in the head gasket might go undetected!<br>
Your welcome,</div>
<div>Gary Hodson<br>
<br>
<div style="font-family:arial,helvetica;font-size:10pt;color:black"><font size="2">-----Original Message-----<br>
From: Bob Spidell <<a href="mailto:bspidell@comcast.net" target="_blank" rel="noreferrer">bspidell@comcast.net</a>><br>
To: <a href="mailto:healeys@autox.team.net" target="_blank" rel="noreferrer">healeys@autox.team.net</a><br>
Sent: Thu, Feb 24, 2022 10:44 am<br>
Subject: Re: [Healeys] Head Gasket<br>
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Which, of course, is the theory of the various 'water wetter'
products. I tried (the original, I think) Water Wetter from Redline
and didn't notice a significant reduction in coolant temp; but, I've
got a bottle of the Dynolite version on the shelf I'll throw in the
next time I change out coolant. As they say: "Hope springs eternal."<br clear="none">
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<div>On 2/24/2022 8:30 AM, Michael Salter
wrote:<br clear="none">
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<div>Interesting article Bob but IMHO their
statement:
<div><span style="font-size:12.8px">"Pressure in a
cooling system is vital for keeping water in contact with
t</span><span style="font-size:12.8px">he metal surfaces
of the cylinder heads and block."</span><br clear="none">
</div>
<div>is something of an over simplification. <span style="font-size:12.8px"><br clear="none">
</span></div>
<div>The reality is that any "boiling " of the
coolant produces a "bubble" of gaseous coolant, there is no
air, as such, involved. </div>
<div>Their statement :</div>
<div>"Pressure keeps the air compressed and
maintains the water-to-metal contact. "<br clear="none">
</div>
<div>suggests that the cooling system contains air;
it shouldn't contain any air, other perhaps the very small
quantity disolved in the coolant.</div>
<div>Pressurizing the cooling system raises the
boiling point. Raising the boiling point means that the
temperature of the engine surfaces where gaseous coolant
will be generated will also need to be higher for boiling
to occur.</div>
<div>As the rate of heat radiation from the cooling
surfaces is proportional to the 4th power of the absolute
temperature there is also a considerable increase in the
amount of energy that can be dissipated by the radiator. </div>
<div>These things together make pressuring the
cooling system even to only 7 p.s.i. very advantageous. </div>
<div>As I mentioned earlier the problem with the
100 insofar as cooling system pressure is concerned is the
carbon seal in the water pump and perhaps the design of the
radiator tanks.</div>
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<div>M</div>
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