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how often do you change transmission (manual) and differential fluid?

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Old 10-14-2006, 12:09 PM
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Default how often do you change transmission (manual) and differential fluid?
also, what do you use? was thinking of getting some royal purple trans fluid and 75w90 for diff.
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Old 10-14-2006, 12:11 PM
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Those two parts use different fluids. Don't be putting gear oil in the tranny.
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Old 10-14-2006, 12:12 PM
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Default I've changed my original trans fluid as soon as 7500mi. After you have what you want in, 60k.
I would do the trans 2x as often as the diffs. Consensus is Mobil 1 is fine for diffs. I think RP is good for trans, but RedLine is better mixed 50% MTF/MT90.
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Old 10-14-2006, 12:22 PM
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Default Castrol's oem trans fill product is Dual-Rated. RP is Dual-Rated GL-4&5, works in both.
Note this Syntec from Blau: "Transmission & Differential Fluid For Audi VW MANUAL TRANS".

http://www.blauparts.com/fluids.htm
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Old 10-14-2006, 12:24 PM
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no manual near, how many quarts do I need?
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Old 10-14-2006, 12:26 PM
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Default ....
pwnd by Audi Junkie.

I hate it when I'm wrong.
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Old 10-14-2006, 02:55 PM
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I'm at 90K, I am going to do mine. Mobil 75W90
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Old 10-14-2006, 04:23 PM
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Default Do them ASAP...IMO
I'm assuming the cause of my transmission failing was because there was no fluid in it for whatever reason. Maybe the dealer drained it out or something? lol
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Old 10-14-2006, 06:11 PM
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No surprise if two different p/n or bottles.I have Factory-Fill tables somewhere,"Syntrans"GL4&5
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Old 10-15-2006, 05:16 AM
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Default I guess I'm old skule. I always do GL4 in the trans and GL5 in diffs.
I don't trust the multi-use stuff.
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