JMO but before you start tearing you car apart or taking it to the stealer I think I would try one of the sealers that are out on the market to save you doing that job! Did some reading on them and they sounded very promising! Have some good testamonials! I think before I tore apart my car to try and fix a leak I would give this stuff a try! Not that expencive! And no I do not sell the stuff ! just passing on the info! Check out this site !
# "We have installed Super Seal Plus in over 20 A/C systems in various makes and models, including Mercedes Benz. Super Seal Plus has worked very well for us. It is a great product!"
Smokie
http://www.dugcosupply.com/supersealpro.htm