When I had the oll changed the other day we discussed the use of 5/50 at the shop, including a former Porsche-certified tech, and he said that many who track their cars use 5/50. I do not track mine but as I said my car stays in a hot climate so while it may not be Porsche-approved I am ok with it. Besides, my headers, exhaust and tune are not Porsche-approved either so the warranty is already gone.

 

I'm with you. I just posted that because I was unfamiliar with what C40 meant so I searched and found that doc. I'm considering trying 5-50 just to quiet down my chirping sewing machine that is normal.

 

As I said, it worked wonders on my Targa GTS and since viscosity decreases over time it will only get closer to 0/40 by the time it needs to be changed. You can read about it here: https://www.mobil.com/en/lubricants/...viscosity-oils

 

Swapped my 2022 GTS 4.0 for a 2021 Spyder and holy hell, went from no chirping sound at all to something quite loud! In my case, it gets quite loud at higher rpm’s, first time I heard it, I legit thought there must have been crickets on the side of the road or something

 

I call this 'GT magic'. All the not that nice sounds that as a whole make the car have a soul. The GT4 rear wing starts to whistle over 110mph. GT Magic.

 

GT3 engines don't chirp, so whatever the magic, it's not GT.

 

LOL. It is GT because it’s a GT4 that does it. It’s the piezoelectric injectors.

 

I don't believe that.

 

Below is the only thing you need to worry about, otherwise live with it or sell the car!

 

mmmkay. Good talk

 

The GT4 engine is not a GT engine. The GT3 engine is.

 

I know what you’re getting at. You think the only GT cars have the numbers 2 and 3.

But one could also argue that parts on a GT car make them GT parts.

 

Numbers have nothing to do with it. GTS (not a Motorsport car) has the same (non Motorsport) GT4 engine. GT4 RS has the (Motorsport) GT3 engine. Facts.

 

I mean you're both technically right. The GT3 engine is the GT motorsport engine, however the GT4 engine is still a product of the GT department. They both make noises, though I'm glad my MY23 GT4 does not make the chirping noises mentioned in this thread.

 

has anyone tried changing the injectors to see if it’s a bad batch or something? Some cars have the sound, some don’t. My GTS had NO sound