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<DIV>Now heard back from Castrol/BP.</DIV>
<DIV>Their response is that they do not recommend the use of their non-detergent
30 oil in manual transmissions.</DIV>
<DIV> </DIV>
<DIV><FONT face=Tahoma><SPAN style="FONT-FAMILY: " rel="tempredactor"><FONT
style="FONT-SIZE: 9.8pt">Castrol does not recommend our Non-Detergent 30 oil for
manual transmission applications, and we believe the foaming was likely caused
by some type of contamination, perhaps water i</FONT></SPAN><FONT
style="FONT-SIZE: 9.8pt"><SPAN>n the transmission.</SPAN> </FONT></FONT></DIV>
<DIV><SPAN style="FONT-FAMILY: " rel="tempredactor"><FONT face=Tahoma><FONT
style="FONT-SIZE: 9.8pt">Unfortunately Castrol does not offer a manual
transmission fluid product in Canada or the US.</FONT></FONT></SPAN></DIV><SPAN
style='rel: "tempredactor"'></SPAN></DIV>
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<DIV><FONT size=3 face="Comic Sans MS">This phenomenon is still a mystery to me
as there certainly was no water in the transmission as had drained it 2x before
noticing the foaming.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=3 face="Comic Sans MS">rg</FONT> </DIV>
<DIV> </DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A title=obrimberry@gmail.com>Olin
Brimberry</A> </DIV>
<DIV><B>Sent:</B> Friday, February 24, 2017 12:13 PM</DIV>
<DIV><B>To:</B> <A title=roggrace@telus.net>Roger Grace</A> </DIV>
<DIV><B>Cc:</B> <A title=healeys@autox.team.net>Healey List</A> </DIV>
<DIV><B>Subject:</B> Re: [Healeys] Trans oil foaming</DIV></DIV></DIV>
<DIV> </DIV></DIV>
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style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>
<DIV>Roger,</DIV>
<DIV id=AppleMailSignature> </DIV>
<DIV id=AppleMailSignature>Your post is good timing for me. I just recently
replaced my gearbox and installed Shell ND 30wt. After having a reoccurring
drip, I thought it would be wise to check the oil this past weekend. I forgot to
check the level before I cranked the engine, so I shut it down after it had run
for about a minute. Much to my surprise, I noticed a lot of oil foaming on
the dipstick. The oil level was just fine, midway between high and low.
Always heard oil foaming was a problem to maintaining proper lubrication of the
parts. In engines, I understand that foaming can be caused by over filling the
crankcase. Hopefully, the level is high enough that the foam is above the
rotating gears and bearings. </DIV>
<DIV id=AppleMailSignature> </DIV>
<DIV id=AppleMailSignature>So, I too would be curious what the experts
say. I too have the MT90 at hand, but was concerned that the drip would
possibly be worse if I switched. <BR><BR>Olin K. Brimberry, PE
<DIV>HunterBane Engineering, PLLC</DIV>
<DIV>919-803-4274 (office)</DIV>
<DIV>919-522-1608 (mobile)</DIV></DIV>
<DIV><BR>On Feb 24, 2017, at 11:18 AM, Roger Grace
<<A>roggrace@telus.net</A>> wrote:<BR><BR></DIV>
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<DIV>I recently had the OD on my BJ8 apart to replace some parts –
bearing/accumulator/gaskets/O rings etc.</DIV>
<DIV>For a first sort of sacrificial oil fill I decided to use a non detergent
Castrol 30 wt oil. Date codes less than 18 months old. Plan was to switch to
the expensive Redline MT90 after testing and after a few hundred miles. This
30 WT oil is often recommended by OD experts. I have built an electric
variable speed rest rid to be able to test the transmission outside the
car.</DIV>
<DIV>Overdrive worked fine and transmission sounded OK and ran it for about 2
hours to get the temp up (52C on OD case) and hunt for leaks.</DIV>
<DIV>So far so good.</DIV>
<DIV> </DIV>
<DIV>Then after a few days of standing, and 2 minutes of running, I drained
the oil (to fix a leak) and was amazed to see that the oil had foamed badly
and there were big classic fish eye bubbles on the surface of the oil. Ambient
was about 14C. I did note that the oil coming out of the transmission was
somewhat foamier than that from the overdrive drain plug.</DIV>
<DIV>See enclosed pix.</DIV>
<DIV>After standing overnight the oil looked normal again.</DIV>
<DIV> </DIV>
<DIV>What disturbs me is that unless I had drained the oil I would not have
been aware of the foaming and put it into service .... </DIV>
<DIV>Have now replaced with the MT90 that shows no sign of foaming on the dip
stick.</DIV>
<DIV>Wonder if others have any ideas about this weird phenomenon and is
it a concern ?</DIV>
<DIV>rg</DIV>
<DIV> </DIV>
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