2nd question from newcomer: on cleaning injectors the VW way

VW "factory training" personnel at one time used to recommend a special step for changing fuel filters on their series A and B diesels (NOT TDIs, however, because of the nature of the fuel pumps): the trick was to fill the filter before installing it with type F or Dexron Automatic Transmission Fluid (not synthetics or those high temperature types for Chrysler boxes, which hadn't yet been introduced then anyway). The cars would start fine on the ATF, provided the motor was warm before the filter was installed, and the smoothing out of the motor's performance was always perceptible on my '85 Jetta whenever I did it.

Has anyone any experience with this trick on M-B Diesels???