958 Cayenne: Transfer Case Fluid Change
#76
It's 75w-90 gear oil. You can use something like Motul Gear 300 P/N 105777 if you want to be fancy..
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LittleBitBent (07-20-2021)
#77
#78
i changed the transfer case fluid this weekend - the transfer case was replaced in january 2020 - should fluid be this dirty in just 8000 miles? - can't see bottom of pan and it's about an inch deep
#79
I've changed the TC oil several times in my 2011 CTT. The TC in mine is about 4 years and 50K miles young. I've changed the oil at 10K, 20K and ~3K increments.
I'd bet big money that the amber fluid that drained out of your TC was brand new. The oil gets dirty pretty quick. Would make a ton of sense for the dealer to replace the TC oil as a part of the pre-sale CPO process.
I'd bet big money that the amber fluid that drained out of your TC was brand new. The oil gets dirty pretty quick. Would make a ton of sense for the dealer to replace the TC oil as a part of the pre-sale CPO process.
#80
I just had my tranfer case replaced again. This time at 111,000 miles. 2014 Cayenne S. This was performed by my Dealer under warranty. I was told by the Tech that Porsche will be changing their maintenance schedules. Transfer Case fluid will be changed every 2 years or 30,000 miles per Porsche.
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911guyinaz (10-27-2022)
#81
I did this job over the weekend, thank you for the guide. As others have pointed out, it's one of the easiest jobs you can do to your 958.
I used the permatex thread lock as suggested above ( ) and didn't even bother risking torquing. I reused the existing nuts, gave them a light clean and used the markers on them to make sure I got them back to the right spot.
It didn't feel tight at all but I've been checking it all week and no signs of leaking.
My existing oil didn't come out too dark, my car is 85000 miles so I guess it's been done before. It might feed a few percent smoother but it's not a drastic change to the driving experience.
I used the permatex thread lock as suggested above ( ) and didn't even bother risking torquing. I reused the existing nuts, gave them a light clean and used the markers on them to make sure I got them back to the right spot.
It didn't feel tight at all but I've been checking it all week and no signs of leaking.
My existing oil didn't come out too dark, my car is 85000 miles so I guess it's been done before. It might feed a few percent smoother but it's not a drastic change to the driving experience.
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riteoff (09-11-2022)
#82
Very helpful thread. Just wanted to add a couple of things I did to help the next fellow (or gal):
2012 Cayenne S (Gas), 33,000 miles. (2011 Prod Date). Steel Springs on 21". Mostly stop and go driving. 1st TC fluid change. Did not feel any snaps, lurching, slipping, etc. Just preventative maintenance.
Followed the awesome guide up top. Used the 3" Allen Wrench method (size 8) deilenberger method.
Notes:
1. Took a regular jack and raised it on all 4 corners 1st to get it a bit higher. Lowering the jack slowly so it sat about an inch higher, if that makes sense. Basically went around the car, raised and then lowered slowly so it sat higher.
2. When draining, I noticed if I jacked up the Front Right wheel a few more inches, more fluid will drain out after it initially stopped
3. Fluid was very dark, but not as black as some I've seen on YouTube. No burnt smell.
4. The draining part took the longest. Drip drip drip. Went on for a bit.
5. Before refill, I leveled her again, no jack under the car.
6. Refilling was easy, but like draining, drip drip drip. Waited for a while before the overflow would stop.
7. Bought brand new plugs, did take a pic of the plug positions prior to removal.
8. Fearing the cracking of the case, understanding that these plugs are really under no pressure, over tightening was not going to happen. So took my #8 3" Allen wrench and tightened it to just a little less than where they were seated before, just to be 100% safe. The plugs are new, the sealant is fresh (new plugs come with sealant on threads already) and from what I can feel when tightening, I'm confident it is not going to work itself loose from vibration.
Took a drive and so far, no leaks.
2012 Cayenne S (Gas), 33,000 miles. (2011 Prod Date). Steel Springs on 21". Mostly stop and go driving. 1st TC fluid change. Did not feel any snaps, lurching, slipping, etc. Just preventative maintenance.
Followed the awesome guide up top. Used the 3" Allen Wrench method (size 8) deilenberger method.
Notes:
1. Took a regular jack and raised it on all 4 corners 1st to get it a bit higher. Lowering the jack slowly so it sat about an inch higher, if that makes sense. Basically went around the car, raised and then lowered slowly so it sat higher.
2. When draining, I noticed if I jacked up the Front Right wheel a few more inches, more fluid will drain out after it initially stopped
3. Fluid was very dark, but not as black as some I've seen on YouTube. No burnt smell.
4. The draining part took the longest. Drip drip drip. Went on for a bit.
5. Before refill, I leveled her again, no jack under the car.
6. Refilling was easy, but like draining, drip drip drip. Waited for a while before the overflow would stop.
7. Bought brand new plugs, did take a pic of the plug positions prior to removal.
8. Fearing the cracking of the case, understanding that these plugs are really under no pressure, over tightening was not going to happen. So took my #8 3" Allen wrench and tightened it to just a little less than where they were seated before, just to be 100% safe. The plugs are new, the sealant is fresh (new plugs come with sealant on threads already) and from what I can feel when tightening, I'm confident it is not going to work itself loose from vibration.
Took a drive and so far, no leaks.
I've changed the TC oil several times in my 2011 CTT. The TC in mine is about 4 years and 50K miles young. I've changed the oil at 10K, 20K and ~3K increments.
I'd bet big money that the amber fluid that drained out of your TC was brand new. The oil gets dirty pretty quick. Would make a ton of sense for the dealer to replace the TC oil as a part of the pre-sale CPO process.
I'd bet big money that the amber fluid that drained out of your TC was brand new. The oil gets dirty pretty quick. Would make a ton of sense for the dealer to replace the TC oil as a part of the pre-sale CPO process.
I also have a 2011 CTT
which Ravenol TC oil did you use?
#84
I just had my tranfer case replaced again. This time at 111,000 miles. 2014 Cayenne S. This was performed by my Dealer under warranty. I was told by the Tech that Porsche will be changing their maintenance schedules. Transfer Case fluid will be changed every 2 years or 30,000 miles per Porsche.
#85
I hve a cayenne S diesel .i am confused between Revnol tf-0870 dtf-1 & the other vsg 75 w-90 they have on offer. it seems You cant go worng with DTF-1.. is it true.?In india i guess not many have done DIY on their expensive Babies. so i am basically on inchartered Local waters .
What did you end up using and how did it turn out?
#86
from what I understand you have to just check to see if you have a TC with an electric plug coming out of it.
most likely yours don’t
Go to Blauparts website it explains in detail which oil you will need. But unfortunately you will still need to crawl under your car to visually check for the plug and verify 100%
most likely yours don’t
Go to Blauparts website it explains in detail which oil you will need. But unfortunately you will still need to crawl under your car to visually check for the plug and verify 100%
#87
Hii
Hi @chandanYOGI I also have a Cayenne S Diesel and am also having difficulty determining which transfer case (and diff) oils to use.
What did you end up using and how did it turn out?
What did you end up using and how did it turn out?
#88
so I did end up using both fluids at different times. Apparently the fault was not in TC but the tires. The tire replacement for front n rear were done at different time that led to the misbehaving TC . Now I am worried that I might hv toasted it . But the jerks are very slight and infrequent now after replacing all 4 tires
are you saying that all four tires have to be replaced at the same time, every time?
because I too have newer tires on the front over the rears and have those slight jerks as well.
I feel it more when making extreme slow turns like k turns or very sharp parking type turns.
#89
TC BLUES
can you elaborate?
are you saying that all four tires have to be replaced at the same time, every time?
because I too have newer tires on the front over the rears and have those slight jerks as well.
I feel it more when making extreme slow turns like k turns or very sharp parking type turns.
are you saying that all four tires have to be replaced at the same time, every time?
because I too have newer tires on the front over the rears and have those slight jerks as well.
I feel it more when making extreme slow turns like k turns or very sharp parking type turns.
Oh dear. you have made the exact same mistake as mine. most member in this forum will shudder at our decision to change just two tires. i took a calculated risk at that time as i thought the difference in diameter wasn't much and all 4 tyre looked almost new after the change. but the electronics ? mechanicals of the TC just start acting weird due to that. since the car was new to me at that time i assumed it was due to TC. must hv driven around 10k Km like that with one oill change.
However my stupidity didnt end there. there was one more tyre damage just before i was planning a long trip and i decided to change just one tyre for the trip with a slightly worn tyre i had taken out earlier . i was planning to change all 4 after the trip. BIG mistake. the whole AWD system let me know that its hating me . 5-6 errors came right in after 200 km or so.
the thing is after i change all 4 tyre the car just went magically smooth for some time. now i can hear very very faint screching sound occasionally during turns. guess the differential is dying . but still way better than before.
LOng story short. never ever do partial replacement of the cayenne tyres.
#90
Oh dear. you have made the exact same mistake as mine. most member in this forum will shudder at our decision to change just two tires. i took a calculated risk at that time as i thought the difference in diameter wasn't much and all 4 tyre looked almost new after the change. but the electronics ? mechanicals of the TC just start acting weird due to that. since the car was new to me at that time i assumed it was due to TC. must hv driven around 10k Km like that with one oill change.
However my stupidity didnt end there. there was one more tyre damage just before i was planning a long trip and i decided to change just one tyre for the trip with a slightly worn tyre i had taken out earlier . i was planning to change all 4 after the trip. BIG mistake. the whole AWD system let me know that its hating me . 5-6 errors came right in after 200 km or so.
the thing is after i change all 4 tyre the car just went magically smooth for some time. now i can hear very very faint screching sound occasionally during turns. guess the differential is dying . but still way better than before.
LOng story short. never ever do partial replacement of the cayenne tyres.
However my stupidity didnt end there. there was one more tyre damage just before i was planning a long trip and i decided to change just one tyre for the trip with a slightly worn tyre i had taken out earlier . i was planning to change all 4 after the trip. BIG mistake. the whole AWD system let me know that its hating me . 5-6 errors came right in after 200 km or so.
the thing is after i change all 4 tyre the car just went magically smooth for some time. now i can hear very very faint screching sound occasionally during turns. guess the differential is dying . but still way better than before.
LOng story short. never ever do partial replacement of the cayenne tyres.
To add to this. Make sure you also rotate tires at some regular frequency - 10k miles or less.