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Dear Group,  I would appreciate any thoughts on how to cure a pesky oil drip
that I have been getting off of the oil drain plug on the bottom of the oil
pan of my Continental TSIO 550.  It was spotless for 400hrs. Then without
explanation after an oil change ( I usually change the oil myself, but this
one was by my A&P) I noticed a drop that would form on the plug itself.  I
removed the safety wire and found that the nut was reasonabley snug, but not
as tight as I usually tighten it.  I tightened it resafety wired it and it
still leaked.  At the next oil change I got a new copper crush washer and
replaced the old one and tightened it to 18lbs of torque.  To my
disappointment it was still leaking the next day.  It is a slow drip that
takes probably a few hours to reform ( I have never hung around to time it).
My A&P told me to tighten it down to about 50lbs. torque, but I was
concerned about stripping the threads so I only tightened to 18lbs. Anyone
encountered this before or have any suggestions?  John Wright iv-p

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Please send your photos and drawings to marvkaye@olsusa.com.
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