Oil filter confusion

Am I the only person with a wing nut on the top of the oil filter? View attachment 75202 Or is this a feature of the F4-134 engine only? I believe it takes the same cannister: Fram C3 or C3P. Also, whenever I've bought a new cannister, it has come with instructions on how to install it on a Mercedes. It makes me feel like I'm driving in luxury.
That's a heckuva wing nut!
 
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