I need to remove the oil filter housing cap from my 2009 Mercedes Benz Blue Tec. ( the V 6 diesel engine)
I try to open the housing but was not able because I do not have that special wrench to remove the threaded cap from the oil filter housing.
Please let me know the size and how many flutes that wrench has.
Thanks so much.

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Nyck - TX - USA

Here's the one I got for my CDI:

https://www.amazon.com/gp/product/B000I1CCCA/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 154k miles
06 E320 CDI "Rutherford", Black on Tan, 172k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 142k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife