Mity-Vac is better, especially the one you hook to shop air.

Dipstick is exposed after removing big plastic engine cover.

You do NOT vacuum via oil fill cap or via oil filter housing.

EVERYONE in the industry will testify that more oil is removed by vacuuming than by draining.

IF you drain via pan bolt, washer MUST be replaced, not reused. This is an industry-wide practice for German vehicles.

Procedure is provided in detail in the W211 Service DVD available from Dealer or by calling 800.for.merc.

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