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Transmission fluid change procedure

 
Old 07-12-2019, 06:39 PM
  #16  
F SANE IL
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Good to know the approximate DIY cost for this. I was going to actually start looking this up. First I want to find out all the detailed service info on my CS. Just a matter of driving out to a dealer in CT.
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Old 07-12-2019, 09:55 PM
  #17  
garrett376
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Originally Posted by Mrg02D View Post
How often should we be doing this?
Porsche says every 16 years or 160,000 miles.
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Old 07-13-2019, 10:11 PM
  #18  
YaNi
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You guys should check out the ClubTouareg procedure. Far easier and a superior result.

Basically you have 2 buckets and you disconnect the fittings on the oil cooler. You put a hose on each line and you run one to your drain bucket and suspend the other bucket with the new fluid. You run the car for a few seconds and it pumps out a liter or two. Then you shut it off and let the new fluid gravity fill back to the pan. The pump is forcing fluid out much quicker than the new fluid gravity drains back to the trans. You repeat this until you see fresh fluid coming out the drain line. It should take you about 12L total.

It will replace all of the fluid in the trans system, except for 0.7L in the oil cooler. If you drop the pan the best you can hope for is about 7L, which means there is 4-5L of old fluid still in the system. It takes much less time too; even going slow you can get it done in about 90 minutes. Most guys are only measuring what they removed and replacing the exact amount. I would still recommend you do the fill procedure, since you don't really know that the original fill amount was correct.

The filter is just a wire mesh, so it's not like an engine oil filter with fine filtration. It just filters out any large pieces. I wouldn't bother replacing it every time. The only thing that would be useful to do that necessitates dropping the pan is the check/clean the 4 magnets in the pan.
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Old 07-13-2019, 11:14 PM
  #19  
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Originally Posted by YaNi View Post
You guys should check out the ClubTouareg procedure. Far easier and a superior result.

Basically you have 2 buckets and you disconnect the fittings on the oil cooler. You put a hose on each line and you run one to your drain bucket and suspend the other bucket with the new fluid. You run the car for a few seconds and it pumps out a liter or two. Then you shut it off and let the new fluid gravity fill back to the pan. The pump is forcing fluid out much quicker than the new fluid gravity drains back to the trans. You repeat this until you see fresh fluid coming out the drain line. It should take you about 12L total.

It will replace all of the fluid in the trans system, except for 0.7L in the oil cooler. If you drop the pan the best you can hope for is about 7L, which means there is 4-5L of old fluid still in the system. It takes much less time too; even going slow you can get it done in about 90 minutes. Most guys are only measuring what they removed and replacing the exact amount. I would still recommend you do the fill procedure, since you don't really know that the original fill amount was correct.

The filter is just a wire mesh, so it's not like an engine oil filter with fine filtration. It just filters out any large pieces. I wouldn't bother replacing it every time. The only thing that would be useful to do that necessitates dropping the pan is the check/clean the 4 magnets in the pan.
How about a video? Sounds like a great way for me to wind up calling for a tow truck :-)
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Old 07-14-2019, 01:56 AM
  #20  
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Originally Posted by Mrg02D View Post
How about a video? Sounds like a great way for me to wind up calling for a tow truck :-)
Have you looked in our DIY forum? It's there but not a video. I'd suggest visiting Utube and searching.
https://rennlist.com/forums/cayenne-...uid-flush.html
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