qbix

Seriously.
Last season I had to add app. 0,6l of oil each time I hit a racetrack. That was including spirited or very fast way to the track.
This year however after two events the oil level is where it was after I changed it. Same Mobil 1 0w40.
Is there anything I should start to worry about? The car had 7k km at the beginning of this year and now is 10k km.
I kind of followed the break in procedure last year before went to a racetrack for the first time.

90944

Your oil gauge is probably faulty!

RealityGT

This is what should happen with high performance engines. You seated the motor properly by driving it!

qbix

That would mean pretty long seating! 7k km.

Alan C.

Mine quit smoking and using oil after about 9000 mi.

TRAKCAR

Same here; At first 200cc per track day, sometimes more, now no difference after 2 track days.
Actually after 4 track days my oil "overfill" warning came on. I opened and closed the lid and it was happy again.

10,000 miles. Car just went if for another oil change, PDK oil change and plugs. Looks to be about $3K job! Rip off but at least its recorded as 100% stock and fully serviced in the dealer system in case it breaks.

LAGinz

My engine also at about 9000 miles and it seems to have loosened up..and feels faster. I would ordinarily chalk this up to my active imagination realm except in most cars I've owned they feel somewhat slower after putting on the miles, as I get used to the speed levels.

fxz

An old OPD mech engineer advice
Porsche NA boxer engines takes 10k km to start extrapolating all the performance,
indeed if you treated them appropriately (break in plus oil, warming and cooling)

Nodrip

After 1.5 year, my car is still drinking oil, it didn't really changed from the start...


I don't remember that you have to change PDK oil/plugs after 10 000 miles...
Do you mean 10 000 miles on track?

TRAKCAR

Just as a precaution, maybe 7000 miles are track miles.

The guys racing PDK cars change the oil and have noted improved performance.
The car ran a little rougher and shifted a little rougher than when new, so just trying stuff to see if it makes any difference.

bronson7

After my first 5000 kms used hardly any oil. Did an oil change, now after another 2000 kms, used just about 100ml. No smoke at start up from day one. Always let engine warm up and idle down for a minute prior to shutting down. Runs like a top.

qbix

Ok, thanks for your feedbacks.
Looks like it is kind of normal.

Talking about smoking on start-ups.. It happens to my car very rarely and only if the car is left on a little up/downhill.

TRAKCAR

Same here. As opposed to the 997's that all blew a big cloud of blue smile once in a while, the 991 never has.

LexVan

It's normal, and it's even printed in your Owner's Manual. That's the little booky looking thingy in your glovey box.

Mumbles

My 09 c2s started using a less oil at 9km, now it uses next to nothing between oil changes. But it took to 9k to see the difference