rctoys

I did a search and did not locate any info. Just got a 2011 CL63 and plan to do my own oil chanages. Talked briefly to the dealer today and they mentioned to be sure to pull the lines off the inner coolers and be sure to let them drain. Can any one assist here? Where are these lines located? Under the car I assume.

Also has anyone changed the pads to EBC yellows for less brake dust?

Sorry for the noob questions.