I been meaning to ask about this too.
I switch to Durablend 10w-30 and mine started knocking with 1-2k on the oil change.
I noticed that when I changed it again (still using durablend) it went away until I put some miles on it.
Dealer said that is was dirty oil and I need to change it. GGRRRRRR.
I am still researching this issue. BTW
Any thoughts on this?