I've noted that many recommend the copper crush ring washers on the oil
drain plug and the use of Mann or Mahle oil filters.  Due to lack of
foresight and/or time, I had to get an OEM oil filter and drain plug
ring from the local dealer.  Nobody here (locally) carries the Mann
and/or Mahle filters and I don't know about the copper crush rings.  The
OEM washer is not a crush ring but is solid instead.  Is there any real
downside to going ahead and using these OEM parts on my new engine?  I'm
at the 500 mile point and will be changing the oil again at 1,000
miles.  At that point I will be sure to get the Mann filter and copper
crush ring.

Thanks for any and all advice on this.
Marc Perdue