Is the engine fully warmed up?

 

 

Open rear lid and listen to each bank closely, if one side has a ticking sound, that's not so good from what I hear. Not sure exactly the cause. Hopefully others with more knowledge will chime in.

 

Place recording device beneath the cylinder head underneath the car and leave it there for several seconds. Then switch to the other side to do the same. Hard to tell when moving around.

 

 

When is the last time you had an oil change? What weight oil are you using? Have you checked your oil level?

 

 

I was over at the 997 forum reading a few threads on the "bore scoring" phenomenon which seems to be big problem with the M96 and M97 motors. Many claim it has a lot to do with cars from colder climates. Any chance you know where this C4S spent most of it's life? Raby has a different take on the subject and ironically he uses a motor out of a 996 C4S to explain that bore scoring is many times misdiagnosed as a noisey lifter. Check it out...

 

I've heard even the dealers are suggesting to run 5w40 Motul 8100. I can't really hear much in the video you posted, but the right oil and weight can have a huge effect on clicks and oil burning.

 

Car is from NJ, garage kept and dealer serviced its entire life. Given that it only has 37k miles, I assume it was primarily driven in fair weather. I may go to another oil type next change.

 

There's a lot of oils to choose from, and most all of them are pretty darn good. I've done a lot of research on oils over the years, I hang out at bobistheoilguy.com. When researching what oil to use in my 03 996 I chose Lubri Moly 5W-40 (full synthetic). It's made in Germany and meets all the requirements Porsche had for our cars when they were new and it's reasonably priced on Amazon. I just drive my car as a daily driver and I won't be auto-x'ing or tracking the car.

On the oil level, for street use I would recommend the level be at the top, not halfway.

You will get lots of different recommendations, this is one.

 

To avoid risks of overfilling the car with oil and to prevent damage to the AOS, it's best keep the oil level at the middle of the indicator. When a Porsche 996 is at the (BOTTOM) of the indicator, that means it's only 1 liter low on oil. At that point, it's best to add 1/2 of one quart of oil to the car.

 

Does this mean halfway on the dipstick, AND the electronic oil level?

 

is there a video with audio on the internet, on how a m96 should sound on cold start and warm? Does Mr Raby have one of his freshly built motors?

Sorry I don't have answers for the op.