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drain hole oil filter housing?
on the oil filter housing beside the mounting face for the oil filter there is a small hole which I believe to be a drain hole to take away any oil spilt when removing the filter.
is it a drain? and where does it go?
I ask this because whenever I do an oil change I am super careful not to have any oil spill onto the front aluminum undertray when I take out the drain plug. but every time I change the oil I have to clean up oil from the topside of the undertray after driving it for a couple of hundred km's. Once it is cleaned up I don't get any more oil there until the next change.
I pre-fill my filters before installing them so I spill a small amount of oil - I am assuming that it goes down this drain hole and gets left on the top of the undertray.
I have googled but can't see an answer to this.
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