i have a 00 clk430 with 70k miles on it. besides the a and b services should i be getting ready for some kind of extra things to do to ensure the proper running of my car. i know that the spark plugs should be replaced at 100k miles but is there anything else i should worry about?

 

You should change the tranny fluid. I know they tell you it's "lifetime" fluid, but if you don't change the fluid, the lifetime will be much shorter. Make sure to only use the Mercedes fluid, and you'll need another tamper proof plug.

Do a coolant flush, fuel filter, brake fluid flush, etc. if you haven't done so already.