Anybody try this stuff? I use PS in every tank, but have not been any more agressive with cleaning the system:( . I may do this on the wife's E300DT - here is a guy from mercedes shop doing just that. you can hear the difference.

http://home.comcast.net/~crmont/begin_purge.mpg (http://home.comcast.net/~crmont/begin_purge.mpg) (mpeg1 14meg)