Funny thing this morning: During my usual "run it up to +4k RPM" at the end of my commute to work, I really did not hear the sound. The only difference is that it is 8 degrees Fahrenheit (-13 degrees Celcius)...

Frozen engine mounts? Tighter serpentine belt? Cannot be the nozzles, correct?

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Scott C.

2006 E320 CDI (120k miles)
FOR SALE: 1998 E300 Turbo Diesel - Black w/Tan Leather - Euro delivery (236k miles)