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Unread postPosted: Sun Apr 21, 2019 12:01 pm 
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Lurking
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Joined: Wed Aug 04, 2004 11:24 am
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Location: "The OC"
When The Hatch got its new motor, so many years ago, she also got a new freeway flyer gearbox. I had not changed the tranny oil in it since it was installed, checked and topped off, but never changed.

Before this years trip to BBB, Kyle was home for Christmas, and he and I drained and changed the 90wt.

It was the color of what I expect Unicorn Milk would be. Gray and full of sparkles. No gritty feeling, but very sparkling.

We drained it completely and filled her up. The bottom plug was full of super fine metal shavings, the aforementioned sparkles.

I’ve been driving The Hatch for the last 5 months about 1-2x per week, and recently I’ve noticed a new sound in the gearbox (a new kind of whine). Could it be my imagination? Am I getting old and senile? Hearing things? I have no leaking of 90wt, so today I decided to pop the side plug and check the level, it was only slightly low, and the oil that I found on my finger had the telltale sparkles.

It took only about 4-5 pumps for the 90wt to leak out the side and she is full again.

I had prepared perfectly, coveralls, gloves, cardboard to catch drips, all in order. Left the 90wt in the sun to warm, had my pump attached to the gallon jug, things were going well until I was almost done, I grabbed the jug and caught it by the pump, which came loose and the jug of 90wt spilled all over my paver driveway.

It is Easter Sunday, so I kept the explicative language to myself…

Question: is tranny oil supposed to have a milky sparkle to it always?

I have no shifting issues, stays in gear, is not too loud. Seems to run fine, but it certainly sounds different since the change of oil.

Thoughts?

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Unread postPosted: Sun Apr 21, 2019 9:43 pm 
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SV2s Forums Regular
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Joined: Wed Jun 02, 2004 7:02 am
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Location: On the Point.
Do you check the oil level in your reduction boxes? They have separate drain and fill plugs. If the whine sounds in sync with rpm, it's probably motor or generator related. If it's in sync with road speed might be one of the four redux bearings. Good thing you know how to replace them. :grin:

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Unread postPosted: Mon Apr 22, 2019 7:37 am 
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Location: San Diego
Thanks for the looooong explanation, glad I had a full cup of coffee!

One time (not at band camp) my son-in-law, I and many family members were going to Yosemite.
He wanted to change the gear oil it his bus, as he stated, I have never changed and it's never given me any problem!!
We changed it went to Yosemite, came back and his trany was shot!!
Moral of the story, I don't have no stinkin moral to the story.

I've never changed mine, should I??

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Unread postPosted: Mon Apr 22, 2019 7:55 am 
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The moral to the story is.....

When in doubt, throw Kyle in front of the Bus!

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Unread postPosted: Mon Apr 22, 2019 12:06 pm 
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Sunshine
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Location: San Diego
Sparkles are bad.
Are they bronze brassy sparkles or grey metallic sparkles?
Brassy insinuates certain bearings, grey could be other types of bearings.
The whiny sound also indicates bearings.
The fact that it shift fine indicates your synchros are fine.
No chunks of metal indicates your gears are fine.
Yes you should change your oil, I can't recall the interval but I think it's every 12k?
Grey and sparkly oil tells me one of your bearings is likely getting eaten up. Try going down a hill in gear and cut the engine off and listen for rumbling.


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Unread postPosted: Mon Apr 22, 2019 6:58 pm 
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Dan wrote:
Yes you should change your oil, I can't recall the interval but I think it's every 12k?.


12K, dang I'm about 150k over due!

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56 Kombi (The Slayer Bus)
65 Sundial Camper
68 Single Cab
61 Rag Top (went to a good home)
03 Passat (gone)
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