Does anyone change their oil before 10k miles intervals?
#1
Does anyone change their oil before 10k miles intervals?
I know Porsche recommends this, but I feel uncomfortable with the idea of it. Oil degrades over long use and many modern engines consume it. I think long term, longer intervals will cause sludge and starvation issues. What are your opinions?
#2
Banned
Join Date: Mar 2011
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The 10k interval assumes very gentle use of the vehicle. I do 5k intervals because my Cayenne frequently is driven short distances where the oil doesn't have a chance to fully heat up (which causes water to be absorbed in the oil from the PVC system). Less than 5K would be if the vehicle were driven regularly in dusty conditions or at extreme high temperature conditions.
#4
Burning Brakes
I do mine at roughly 7500 miles, sometime less. I did the same for my Boxster when I had it. I shortened that to 5K miles when I'd track the car.
The 10K interval is a way for Porsche to reduce the cost of ownership during the warranty period. They really don't care too much about the longer term effects of extended maintenance intervals.
The 10K interval is a way for Porsche to reduce the cost of ownership during the warranty period. They really don't care too much about the longer term effects of extended maintenance intervals.
#5
Rennlist Member
I do the 3k oil changes.
#6
every 5k on my Carrera S. 5 by me and 10 at dealer. I reset the oil moniter with ICarsoft tool. Then again, my BMW has no dipstick and no way to check oil level, so when ever i get the “Service Light” - dealer service. So far the Bimmer has over 60k,twin turbo, and no issues. go figure. i know some dinosaurs who still change oil every 3 k. do what ever makes you feel comfortable. Car manufacturers spend a lot on r&d so i believe they know something about engine maintenance.
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#8
Race Car
The 10k interval assumes very gentle use of the vehicle. I do 5k intervals because my Cayenne frequently is driven short distances where the oil doesn't have a chance to fully heat up (which causes water to be absorbed in the oil from the PVC system). Less than 5K would be if the vehicle were driven regularly in dusty conditions or at extreme high temperature conditions.
#10
My Cayenne S holds 9.5 qts. which is about double the oil vs a non-turbo engine. Twice the oil, double the service interval. You can also send a sample of your used motor oil to a lab for analysis. They'll tell you how much of the additive package remains and how many additional miles you could have gotten out of the oil (additional $10 for that test). That said, I change the oil and filter every 10,000 and just the oil every 5,000. With today's high performance synthetic oils that's more than frequent enough (in my opinion).
https://www.blackstone-labs.com/standard-analysis.php
From the lab website:
Ok, now for the technical questions. What is a TBN?
A TBN (total base number) measures the amount of active additive left in a sample of oil. The TBN is useful for people who want to extend their oil usage far beyond the normal range.
Do I need to send in a separate sample for a TBN?
No. We can run your TBN on the same sample of engine oil you send. It's also not necessary to send in a sample of virgin oil for a TBN. You're welcome to do so, of course, and many people do this to see where the TBN starts out. If you do send in the virgin oil sample, the cost for that sample is the same as for your used engine oil sample.
https://www.blackstone-labs.com/standard-analysis.php
From the lab website:
Ok, now for the technical questions. What is a TBN?
A TBN (total base number) measures the amount of active additive left in a sample of oil. The TBN is useful for people who want to extend their oil usage far beyond the normal range.
Do I need to send in a separate sample for a TBN?
No. We can run your TBN on the same sample of engine oil you send. It's also not necessary to send in a sample of virgin oil for a TBN. You're welcome to do so, of course, and many people do this to see where the TBN starts out. If you do send in the virgin oil sample, the cost for that sample is the same as for your used engine oil sample.
#11
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Do I need to send in a separate sample for a TBN?
No. We can run your TBN on the same sample of engine oil you send. It's also not necessary to send in a sample of virgin oil for a TBN. You're welcome to do so, of course, and many people do this to see where the TBN starts out. If you do send in the virgin oil sample, the cost for that sample is the same as for your used engine oil sample.
No. We can run your TBN on the same sample of engine oil you send. It's also not necessary to send in a sample of virgin oil for a TBN. You're welcome to do so, of course, and many people do this to see where the TBN starts out. If you do send in the virgin oil sample, the cost for that sample is the same as for your used engine oil sample.
#12
Rennlist Member
For my 2016 CTT Since I do not drive that much, maybe 8000/10000 km/Year mostly short drives , thus I would say that is a sever duty condition . I do change the oil twice a year . for the summer in April I use AMS oil "Porsche A40" 5W40, in October I use Mobile one 0W40
#14
Instructor
I do 5Kmi oil change intervals for my Cayenne S eHybrid because using the engine in a hybrid is equivalent to frequent short trips, and the oil gets contaminated with gasoline because it never reaches or stays at operating temperature for long
Like others, I'm very wary of the transfer case issues and replace the transfer case fluid every 20Kmi, differential fluid every 30Kmi, and will do the tranny fluid at 50Kmi
Like others, I'm very wary of the transfer case issues and replace the transfer case fluid every 20Kmi, differential fluid every 30Kmi, and will do the tranny fluid at 50Kmi