I would like to replace the spark plugs on my 2000 c280 sport which has 110K miles.
I do work on my other cars and have never worked on a Benz.
The car is starting to Idle rough and my search through this forum is in line what the dealership is telling me. I just have a hard time spending $300 dollars to replace spark plugs. (dont think ive spent $300 in my life on plugs)
1. Is there any special thing I sould be wary of should I attempt to replace them?
2. Are Platinum Plugs OK in this engine?

Any help or insight would be greatly appreciated

Thanks in advance

Rob