Slight rattle on cold start
2nd Gear
Joined: Jan 2026
Posts: 2
Likes: 0
Update on this issue?
Hi all, i’m a 2021 C2 owner 18k miles and i’m experiencing a similar noise, i went liqui moly toptech 5w-40 and it appears the issue started with that, so i went back to 0w-40 liqui moly synthoil a40 oil but it is still doing it same noise as the original thread starter only a second of that noise mine is not as bad, however when i had the 5w-40 it was quite loud and longer
I’m at a loss becuase i had just got my cold start delete done on my tune and im not sure if the cold start low RPM idle has anything to do with it, has anyone gotten an update on this noise?
I’m at a loss becuase i had just got my cold start delete done on my tune and im not sure if the cold start low RPM idle has anything to do with it, has anyone gotten an update on this noise?
Thread Starter
Racer
Joined: Apr 2023
Posts: 282
Likes: 152
From: Central NJ
My previous 992.1 S did it (I am the OP), and now my new 992.2 T does it. The S was very, very loud - the T is faint. I think it's just a trait of these cars. Although would be amazing if someone could say what EXACTLY it is and if we should be worried about it or not
Last edited by m732sg; Apr 28, 2026 at 02:46 PM.
