Same fluid for both front and rear differential?
04-30-2018, 01:56 PM
#1
Same fluid for both front and rear differential?
Hi, I have 2012 CTT with PVT+, I found a thread here referencing this fluid, below. Can I use this for both the rear and the front differentials, or only the rear? If I need something else for the front, what should I buy? A link would be helpful. Thank you!
Here's the fluid I bought:
https://www.pelicanparts.com/cgi-bin...command=lookup
Thank you!
Here's the fluid I bought:
https://www.pelicanparts.com/cgi-bin...command=lookup
Thank you!
05-01-2018, 12:23 AM
#2
Rennlist Member
I'm curious about this too. I got a pail of stock 997 transmission fluid, Shell Spirax S5 ATE 75W-90. I already used some of it on the 997 and the Audi (it's also manual). It's a GL4/GL5 fluid. Can I use it on the transmission, front and rear diffs? It's not suitable for limited slip diffs but I don't have one in any of the cars. I know the transfer case has its own separate fluid and I got that covered.
05-01-2018, 02:03 AM
#4
Yes that is the purpose of my post, I am not able to locate the factory spec for the front differential fluid, would be grateful if anyone knows the answer. On Pelican it shows many that apprear identical as being for both front and back. On Rennlist I have read all the threads I could find and only the part number for the PVT+ is called out.
05-01-2018, 02:08 AM
#5
RL Community Team
Rennlist Member
Rennlist Member
You should download the PET:
https://www.porsche.com/usa/accessor...originalparts/
The part number from the above for the front axle differential is this:
000 043 205 30
It's any old 75w-90 gear/trans oil.
https://www.porsche.com/usa/accessor...originalparts/
The part number from the above for the front axle differential is this:
000 043 205 30
It's any old 75w-90 gear/trans oil.
05-01-2018, 12:22 PM
#6
Thank you - this is really helpful. On the other hand this suggests that I can use the same fluid that I bought for the rear PTV+ differential? I couldn't see PTV+ referenced in this parts catalog so I wasn't able to double check that the rear fluid I bought was correct, I chose it based on this thread here where CarGuyNVA said "Just wanted to note here in this DIY that the updated part # for the genuine Porsche diff fluid for PTV+ equipped Cayennes is 000-043-300-37.
https://rennlist.com/forums/cayenne-...-and-rear.html
https://rennlist.com/forums/cayenne-...-and-rear.html
05-01-2018, 09:34 PM
#7
Drifting
Thank you - this is really helpful. On the other hand this suggests that I can use the same fluid that I bought for the rear PTV+ differential? I couldn't see PTV+ referenced in this parts catalog so I wasn't able to double check that the rear fluid I bought was correct, I chose it based on this thread here where CarGuyNVA said "Just wanted to note here in this DIY that the updated part # for the genuine Porsche diff fluid for PTV+ equipped Cayennes is 000-043-300-37.
https://rennlist.com/forums/cayenne-...-and-rear.html
https://rennlist.com/forums/cayenne-...-and-rear.html
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05-01-2018, 11:58 PM
#8
RL Community Team
Rennlist Member
Rennlist Member
Thank you - this is really helpful. On the other hand this suggests that I can use the same fluid that I bought for the rear PTV+ differential? I couldn't see PTV+ referenced in this parts catalog so I wasn't able to double check that the rear fluid I bought was correct, I chose it based on this thread here where CarGuyNVA said "Just wanted to note here in this DIY that the updated part # for the genuine Porsche diff fluid for PTV+ equipped Cayennes is 000-043-300-37.
https://rennlist.com/forums/cayenne-...-and-rear.html
https://rennlist.com/forums/cayenne-...-and-rear.html
05-02-2018, 02:48 AM
#9
I think I was thrown off when you said that you could use "any old 75w-90 gear/trans oil" - maybe I took that literally. However, I did try to research the products that come up under the two different part numbers, and naively, I really can't see any discernible difference (listed below for reference) - I even went to the manufacturer's website. I bought enough of the PTV+ oil for both the front and rear... I guess I should only do the rear this time and buy the different oil to do the front in the future, but part of me wonders if it would really make a difference if I put the same fluid in the front as well.. it seems if one of the differentials is picky it would be the rear.
On another note, I followed a recommendation to do this on another thread where somebody just bought a used 958CTT with 30k miles and got advice on what work he should complete. I am in the same boat and thus planned this project. But I now notice that the service schedule doesn't call for this work until 16 years of 160k miles.... so now that we've gotten to the bottom of what oil to use, I am wondering whether this is even needed
On another note, I followed a recommendation to do this on another thread where somebody just bought a used 958CTT with 30k miles and got advice on what work he should complete. I am in the same boat and thus planned this project. But I now notice that the service schedule doesn't call for this work until 16 years of 160k miles.... so now that we've gotten to the bottom of what oil to use, I am wondering whether this is even needed
05-02-2018, 02:50 AM
#10
Sorry I forgot to post the two oils that show up for these part numbers at Pelican:
Front: https://www.pelicanparts.com/More_In...9&KeepHeader=Y
Rear with PTV+: https://www.pelicanparts.com/More_In...3-300-37-M1410
Both are nearly identical looking 75W-90 fluids
Front: https://www.pelicanparts.com/More_In...9&KeepHeader=Y
Rear with PTV+: https://www.pelicanparts.com/More_In...3-300-37-M1410
Both are nearly identical looking 75W-90 fluids
05-02-2018, 02:52 AM
#11
RL Community Team
Rennlist Member
Rennlist Member
I think I was thrown off when you said that you could use "any old 75w-90 gear/trans oil" - maybe I took that literally. However, I did try to research the products that come up under the two different part numbers, and naively, I really can't see any discernible difference (listed below for reference) - I even went to the manufacturer's website. I bought enough of the PTV+ oil for both the front and rear... I guess I should only do the rear this time and buy the different oil to do the front in the future, but part of me wonders if it would really make a difference if I put the same fluid in the front as well.. it seems if one of the differentials is picky it would be the rear.
On another note, I followed a recommendation to do this on another thread where somebody just bought a used 958CTT with 30k miles and got advice on what work he should complete. I am in the same boat and thus planned this project. But I now notice that the service schedule doesn't call for this work until 16 years of 160k miles.... so now that we've gotten to the bottom of what oil to use, I am wondering whether this is even needed
On another note, I followed a recommendation to do this on another thread where somebody just bought a used 958CTT with 30k miles and got advice on what work he should complete. I am in the same boat and thus planned this project. But I now notice that the service schedule doesn't call for this work until 16 years of 160k miles.... so now that we've gotten to the bottom of what oil to use, I am wondering whether this is even needed
05-02-2018, 06:31 PM
#13
Drifting
Senior tech at one of the P dealers I use says for the PTV+ rear diff (and the transfer case) fluids, ignore the manufacturer recommended service interval and change the fluids every 20k. I’m a believer....my CTT had only 68k miles when I had the PTV+ fluid replaced a couple months ago. Completely alleviated a slight chatter it had at low speed left turns. Smooth as can be after the fluid swap.
11-19-2018, 07:49 PM
#15
Pro
All
About to change TC fluid and front and rear differential fluid on my 2013 Cayenne Turbo with PTV plus. Going to use Porsche fluid for front and rear. My question is, what are the filling capacities for the front and rear diffs? I read that the front is under one liter. I read differing capacities for the rear. Some places say .8 liter for the rear while other places say 1.4 liters for the rear. I read that with the PTV you have to fill then rotate wheels to get the full 1.4 liters in? Advice please.
About to change TC fluid and front and rear differential fluid on my 2013 Cayenne Turbo with PTV plus. Going to use Porsche fluid for front and rear. My question is, what are the filling capacities for the front and rear diffs? I read that the front is under one liter. I read differing capacities for the rear. Some places say .8 liter for the rear while other places say 1.4 liters for the rear. I read that with the PTV you have to fill then rotate wheels to get the full 1.4 liters in? Advice please.