Ok Cowboy - no need to put a plastic cover on your keyboard - I won't make another mention of my car maintenance record......... ;^)
Heh.... I know... I just love how every time I go to Jiffy Lube they bring me some card with grimy gritty sludge on it which they say came from my car, and right beside it is a pretty smear of clean oil, transmission fluid, whatever... "This came out of your transfer case" they say. For all I know, they wiped the card in the puddle on the floor of the shop ;~D
Sometimes I am in the mood to play along, and sometimes I'm not.
Well, they say oil never wears out, just gets dirty.
You were definitely testing that theory.