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Milky Fluid in a T35 Air Cooled
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pacerman View Drop Down
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    Posted: Feb/23/2019 at 12:40pm
Folks,

While the tranny is out of Moby my 64 Classic I drained it and plan to replace the front seal (just because).  I noticed this milky tranny fluid when I drained it.  Example shown below.  The tranny is air cooled of course, so I don't suspect water, but it may be water that has done this.  Do any of the common transmission doctor chemicals produce this effect.  The fluid smells normal and the tranny worked fine with no shifting problems and no major leaks.

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purple72Gremlin View Drop Down
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Points: 16611 		Post Options Post Options   Thanks (0) Thanks(0)   Quote purple72Gremlin Quote  Post ReplyReply Direct Link To This Post Posted: Feb/23/2019 at 1:58pm
condensation.....been sitting?
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Points: 6881 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Trader Quote  Post ReplyReply Direct Link To This Post Posted: Feb/23/2019 at 3:43pm
If the little chunky bits on the side of that pan are soft and gummy and came out of the transmission, I'm guessing at two incompatible fluids.
Moisture does make it milky but you would need a lot of condensation for that on an air cooled.
If it works fine, I'd flush and refill, moisture or fluid mix up.
Probably do this now and then drain and fill again in the fall before storing.
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pacerman View Drop Down
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Points: 9057 		Post Options Post Options   Thanks (0) Thanks(0)   Quote pacerman Quote  Post ReplyReply Direct Link To This Post Posted: Feb/23/2019 at 9:45pm
Yeah, I will be dropping the pan, cleaning and eventually refilling and installing it beginning tomorrow.  Interestingly, although I have several pan gasket and filter kits I have acquired over the years, I will be using an AC brand pan gasket and filter tomorrow.  I have no idea why AC was making pan gaskets for a BW T35 tranny, but is sure looks like the correct gasket and filter in that kit.   Joe
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tomj View Drop Down
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Points: 7544 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tomj Quote  Post ReplyReply Direct Link To This Post Posted: Feb/24/2019 at 9:49pm
that is odd. could it have been some "one time" water event? car wash, underhood hose or power wash, or a freak arrangement that drips water on the dipstick?

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Points: 2837 		Post Options Post Options   Thanks (0) Thanks(0)   Quote vinny Quote  Post ReplyReply Direct Link To This Post Posted: Feb/25/2019 at 2:16am
Good luck with it Joe. 

I'd like to take mine out too to change bell housings but what if it quits soon after and I have to do the same thing all over again.

The fluid in mine wasn't changed for thirty years and lost its red color by turning to brown.
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pacerman View Drop Down
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Points: 9057 		Post Options Post Options   Thanks (0) Thanks(0)   Quote pacerman Quote  Post ReplyReply Direct Link To This Post Posted: Feb/25/2019 at 11:03am
Well, I dropped the pan yesterday.  There was a small layer of gray sludge and some water separated from the oil.  I guess it was a water/oil emulsion I was seeing.  The tranny looks clean inside otherwise.  The problem could have been self-inflicted because I did pressure waste the engine bay with the engine and tranny in the car.  I only drove it less than ten miles though after washing it, before parking it. I took the usual precautions before the pressure wash but I guess I assumed the bezel on the tranny dipstick would have kept the tranny dry inside.   At any rate, I think water was the problem.  I'm glad that I noticed it.  Joe 
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