5k service and dealer explanation of startup noise(long)
My dealer provided a free synthetic oil change(Castrol Syntec) as I didn't have time to pickup Mobil 1 on my way there.
While my VIN # fell into the needs fixing range, it also had the yellow OK dot and the bolts were at the proper torque.
Dealer claimed the startup noise is "normal" and is caused by the timing chain adjusting. However, this happens only on the S4 and not on other 4.2's as the S4 has the timing chain ,etc in the rear of the engine?? Am I getting snowed with this explanation?
I'm debating about switching to synthetic. I think regular oil is in there now. I deliver parts for a living, and a lot of shops say yes to synth, some say keep it clean and run reg. I'll decide before it goes in for the 50,000 service.
You're not alone on the cold start noise though.



