The linked writeup describes the tool requirements nicely but contains two serious errors.

1. DO NOT put antiseize on plug threads. Mercedes, Bosch, EVERYONE says don't do it. It makes a mess and encourages stripping threads, as the plugs will end up overtorqued as lubrication eliminates ability for torque wrench to provide correct specified reading.

2. DO NOT use KMart platinum plugs as shown, but rather use ONLY the original specification plug, as noted in owners manual.

There is zero/zip/nada 'mericun shadetree mekaniken knowledge that can supercede Mercedes engineering.

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Kent Christensen
Albuquerque
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
Two BMW motorcycles