When doing my second oil change on our '06 TSX yesterday I noticed the
just above the oil filter the block has a large machined and threaded
hole of about 1" diameter. It shines like untouched aluminum. I am
wondering if something fell out of or off of there as it had not a bit
of dirt in it even though the car has almost 7,000 miles on it now.
Is this just a mounting point for some option my car doesn't have?
Thanks for any clues!
John
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