I got the oil changed and Gambino's favorite dealer ....I had to pay x price wish they messed mine up too.
Well now to the real topic no marble noise after oil change I used full 5-30 synthetic
No smoke NO nothing..But I did notice a noise (Rattle) when cold and it is pulleys the two especially just below blower they are not attached to anythig just for belt routing.
They were rattling a bit when first start up when it was cold
but motor sounds normal to me. I did do synthetic @800 miles also
I know some don't agree but everyone has there own opinion

thans
Slick