How bad is my engine? Or need a follow up test to really know.

The only way to know how well the 20 has worked and where you are actually at is to do a leak down and go from there.
 
One year driving on 5 w 20.. going to change oil and do another oil analysis. Will try 5 w 30 or 5 w 40 mobil 1 this oil change
 
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