Okay so I had a problem with both my front struts leaking and going out to where the car doesn't lift on egoing out 3months apart so far I've gone through two so I bought them.one of the Airshocks is from a 2006 Mercedes w220 and the other is its regular one that fits! Every time my compressor kicks on when I turn my car on! I looked at the compressor and it was sagging and missing screws so I picked it up and tied it down. Before that my right front shock which is from the 2006 Mercedes is slightly different design but fits my car perfect which is a 2000 w220 s500 and now that shock from the newer car has gone out it makes a little air leak noise on the shock and the car goes back done so should I buy another shock that's made for the car ? I'm going to have to get a new one anyways cause this is the third shock I'm going to have on my car and i know it's a common problem but I guess that's what I get for buying used any ideas will help and suggestions as well please asap!