Subject: [Healeys] Glycol in oil - Update and summary

From: Roger Grace <[email-masked]>
Date: Sun, 10 Mar 2024 10:11:10 -0700

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 *Issue* =E2=80=93 67 BJ8 with about 15k mi on rebuilt engine by PO.

A few months back when setting tappets noted the dreaded creamy gunge on
the inside of the valve cover indicative of glycol and moisture in the oil.

Have lost several engines (not AH) over the years due to this phenomenon
and am a little paranoid about glycol in the oil. No evidence of oil in
coolant. Compression normal.

Took oil sample to the CAT lab and came back positive with 1332 ppm glycol
and 240 ppm sodium. About 1500 mi on the sample

*Step #1*

So, drained oil completely including the oil cooler (pia) plus filter. Re
torqued head and added some Bars leak stuff to the rad. Drove 420 mi and
did retest. Still positive for glycol at 557 ppm and 55 sodium

*Step #2*

Head off; planed, pressure test and freshen by machine shop; new hi end
gasket; new ARP studs; piston tops cleaned; new gaskets all round. Drained
oil completely again and also new coolant. BTW use 20% glycol in RO water
plus No-Rosion. Drove 420 mi again and retest. Some improvement but still
positive. Above the lab. flag level of 500 ppm (glycol) and 25 ppm (sodium)
at 609 ppm glycol and 29 sodium. Just on edge as they only do glycol
analysis if sodium is above 25 ppm. For interest this translates into
3.25ml (less than a teaspoon) glycol or 16.26ml for coolant to trigger the
flag. Must be bad stuff.

*Step #3*

Coolant pressure test. Drops 3 psi from 13 psi in 14 hours. Done at 65F.
This seems to indicate a small leak ?

*My thoughts:*

   1.

   small crack in block or head that opens up with heat ? Block more likely=
.
   2.

   unlikely to be the known AH block porosity problem with the galleries,
   as oil at 50 psi and the coolant is at less than 7psi and there is no
   evidence of oil in coolant. Must be in the gravity oil return path to th=
e
   oil pan someplace.
   3.

   plan to run with no glycol in coolant; am located on mild west coast and
   heated garage; change oil more frequently. Hopefully any water will
   evaporate off. My understanding is that water is less of a problem than
   glycol in the oil ?
   4.

   consider trying a coolant leak sealant again.
   5.

   maybe next winter pull oil pan and hunt for the leak from downstairs
   with coolant under pressure with a view to doing an epoxy repair ? Wonde=
r
   if others have heard of this or there is a* =E2=80=9Cknown=E2=80=9D *are=
a of block
   weakness ?

So, would welcome *any* ideas/thoughts/suggestions

rg

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<div dir=3D"ltr">
<font face=3D"Arial, sans-serif"><font size=3D"3" style=3D"font-size:13pt">=
<b>Issue</b>
=E2=80=93 67 BJ8 with about 15k mi on rebuilt engine by PO.</font></font>
<p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><font size=
=3D"3" style=3D"font-size:13pt">A
few months back when setting tappets noted the dreaded creamy gunge
on the inside of the valve cover indicative of glycol and moisture in
the oil. </font></font>
</p>
<p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><font size=
=3D"3" style=3D"font-size:13pt">Have
lost several engines (not AH) over the years due to this phenomenon
and am a little paranoid about glycol in the oil. No evidence of oil
in coolant. Compression normal.</font></font></p>
<p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><font size=
=3D"3" style=3D"font-size:13pt">Took
oil sample to the CAT lab and came back positive with 1332 ppm glycol and
240 ppm sodium. About 1500 mi on the sample</font></font></p>
<p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><font size=
=3D"3" style=3D"font-size:13pt"><b>Step
#1</b></font></font></p><p style=3D"margin-bottom:0cm"><font face=3D"Arial,=
 sans-serif"><font size=3D"3" style=3D"font-size:13pt">So,
drained oil completely including the oil cooler (pia) plus filter. Re
torqued head and added some Bars leak stuff to the rad. Drove 420 mi
and did retest. Still positive for glycol at 557 ppm and 55 sodium</font></=
font></p>
<p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><font size=
=3D"3" style=3D"font-size:13pt"><b>Step
#2</b></font></font></p>
<p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><font size=
=3D"3" style=3D"font-size:13pt">Head
off; planed, pressure test and freshen by machine shop; new hi end
gasket; new ARP studs; piston tops cleaned; new gaskets all round.
Drained oil completely again and also new coolant. BTW use 20% glycol
in RO water plus No-Rosion. Drove 420 mi again and retest. Some
improvement but still positive. Above the lab. flag level of 500 ppm
(glycol) and 25 ppm (sodium) at 609 ppm glycol and 29 sodium. Just on
edge as they only do glycol analysis if sodium is above 25 ppm. For
interest this translates into 3.25ml (less than a teaspoon) glycol or
16.26ml for coolant to trigger the flag. Must be bad stuff. </font></font>
</p>
<p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><font size=
=3D"3" style=3D"font-size:13pt"><b>Step
#3</b></font></font></p>
<p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><font size=
=3D"3" style=3D"font-size:13pt">Coolant
pressure test. Drops 3 psi from 13 psi in 14 hours. Done at 65F.=20
This seems to indicate a small leak ?</font></font></p>
<p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><font size=
=3D"3" style=3D"font-size:13pt"><b>My
thoughts:</b></font></font></p>
<ol><li><p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><fo=
nt size=3D"3" style=3D"font-size:13pt">small
	crack in block or head that opens up with heat ? Block more likely.</font>=
</font></p>
	</li><li><p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><=
font size=3D"3" style=3D"font-size:13pt">unlikely
	to be the known AH block porosity problem with the galleries, as oil
	at 50 psi and the coolant is at less than 7psi and there is no
	evidence of oil in coolant. Must be in the gravity oil return path
	to the oil pan someplace.</font></font></p>
	</li><li><p style=3D"margin-bottom:0cm"> <font face=3D"Arial, sans-serif">=
<font size=3D"3" style=3D"font-size:13pt">plan
	to run with no glycol in coolant; am located on mild west coast and
	heated garage; change oil more frequently. Hopefully any water will
	evaporate off. My understanding is that water is less of a problem
	than glycol in the oil ?</font></font></p>
	</li><li><p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><=
font size=3D"3" style=3D"font-size:13pt">consider
	trying a coolant leak sealant again.</font></font></p>
	</li><li><p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><=
font size=3D"3" style=3D"font-size:13pt">maybe
	next winter pull oil pan and hunt for the leak from downstairs with
	coolant under pressure with a view to doing an epoxy repair ? Wonder
	if others have heard of this or there is a<i> =E2=80=9Cknown=E2=80=9D </i>=
area
	of block weakness ?</font></font></p>
	<p style=3D"margin-bottom:0cm"></p>
</li></ol>
<p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><font size=
=3D"3" style=3D"font-size:13pt">So,
would welcome <b>any</b> ideas/thoughts/suggestions</font></font></p>
<p style=3D"margin-bottom:0cm"><font face=3D"Arial, sans-serif"><font size=
=3D"3" style=3D"font-size:13pt">rg</font></font></p>

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From: Hank Leach via Healeys <[email-masked]>
Date: Sun, 10 Mar 2024 17:46:20 +0000 wMDvMrjUoNHJ8Bx1uCNVK77J7L7jjCpNw8UOJzRquN9nxtxv3sQtugXNepwb8Nlkkl6q3YwfUTFHWizjKZpxlt7ymeDyHPi5qcWS4H1HRPV6HnC3BaFIv9X2

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<div>Roger-I still have a feeling that it is bi-passing the waterj acket =
via the threads in the studs-somewhere in head or rocker studs. Check the =
manual for diagram of block showing all areas that are close enough for the=
 water gallery to be near the combustion areas. Tough mystery! =
Hank<br>-------------------- <br><br>From: "Roger Grace" &lt;roggrace@telus=
.net&gt; <br>To: "Healeys" &lt;[email-masked]&gt; <br>Sent: March =
10, 2024 at 10:27 AM PDT <br>Subject: [Healeys] Glycol in oil - Update and =
summary </div>
<div><strong>Issue</strong> &ndash; 67 BJ8 with about 15k mi=
 on rebuilt engine by PO.
<p style=3D"margin-bottom: 0cm;">A few months =
back when setting tappets noted the dreaded creamy gunge on the inside of =
the valve cover indicative of glycol and moisture in the oil.</p>
<p style=3D"margin-bottom: 0cm;">Have lost several engines (not AH) over =
the years due to this phenomenon and am a little paranoid about glycol in =
the oil. No evidence of oil in coolant. Compression normal.</p>
<p style=3D"margin-bottom: 0cm;">Took oil sample to the CAT lab and came =
back positive with 1332 ppm glycol and 240 ppm sodium. About 1500 mi on the=
 sample</p>
<p style=3D"margin-bottom: 0cm;"><strong>Step #1</strong></p>
<p style=3D"margin-bottom: 0cm;">So, drained oil completely including the =
oil cooler (pia) plus filter. Re torqued head and added some Bars leak =
stuff to the rad. Drove 420 mi and did retest. Still positive for glycol at=
 557 ppm and 55 sodium</p>
<p style=3D"margin-bottom: 0cm;"><strong>Step =
#2</strong></p>
<p style=3D"margin-bottom: 0cm;">Head off; planed, pressure=
 test and freshen by machine shop; new hi end gasket; new ARP studs; piston=
 tops cleaned; new gaskets all round. Drained oil completely again and also=
 new coolant. BTW use 20% glycol in RO water plus No-Rosion. Drove 420 mi =
again and retest. Some improvement but still positive. Above the lab. flag =
level of 500 ppm (glycol) and 25 ppm (sodium) at 609 ppm glycol and 29 =
sodium. Just on edge as they only do glycol analysis if sodium is above 25 =
ppm. For interest this translates into 3.25ml (less than a teaspoon) glycol=
 or 16.26ml for coolant to trigger the flag. Must be bad stuff.</p>
<p style=3D"margin-bottom: 0cm;"><strong>Step #3</strong></p>
<p style=3D"margin-bottom: 0cm;">Coolant pressure test. Drops 3 psi from 13=
 psi in 14 hours. Done at 65F. This seems to indicate a small leak ?</p>
<p style=3D"margin-bottom: 0cm;"><strong>My thoughts:</strong></p>
<ol>
<li>
<p style=3D"margin-bottom: 0cm;">small crack in block or head that =
opens up with heat ? Block more likely.</p>
</li>
<li>
<p style=3D"margin-bottom: 0cm;">unlikely to be the known AH block porosity=
 problem with the galleries, as oil at 50 psi and the coolant is at less =
than 7psi and there is no evidence of oil in coolant. Must be in the =
gravity oil return path to the oil pan someplace.</p>
</li>
<li>
<p style=3D"margin-bottom: 0cm;">plan to run with no glycol in coolant; am =
located on mild west coast and heated garage; change oil more frequently. =
Hopefully any water will evaporate off. My understanding is that water is =
less of a problem than glycol in the oil ?</p>
</li>
<li>
<p style=3D"margin-bottom: 0cm;">consider trying a coolant leak sealant =
again.</p>
</li>
<li>
<p style=3D"margin-bottom: 0cm;">maybe next winter =
pull oil pan and hunt for the leak from downstairs with coolant under =
pressure with a view to doing an epoxy repair ? Wonder if others have heard=
 of this or there is a<em> &ldquo;known&rdquo; </em>area of block weakness =
?</p>
<p style=3D"margin-bottom: 0cm;">&nbsp;</p>
</li>
</ol>
<p style=3D"margin-bottom: 0cm;">So, would welcome <strong>any</strong> =
ideas/thoughts/suggestions</p>
<p style=3D"margin-bottom: 0cm;">rg</p>
</div>
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