I had the same wailing belt. Also continental. Belt develops squeak after a few weeks.

When the engine is running, pour water on the belt; if th squeak goes away, replace it.

I replaced mine after 4 weeks of having the belt. Total waste of money.

Now a Made in Japan belt is inside. No squeaks yet.

__________________
1992 200E
M102
102.963
AKA Silver Old Grumpy
Always hope I can freeze someone with the aircon- Just change the compressor again, Subseal leaked with a psssssssss sound.
Its the NON-3 Pointed star items on my car that cost more to repair.$%^&%%*^&