My car does it, 1992 300ce M104 engine, but for like 3 to 4 seconds until the oil pressure comes up.

Depending on yoru oil viscosity, this noise could go away. I use 20w50 all year around in Los Angeles.

It might be the reason for the ticking.

Alon

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'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon