I have a 2012 Toyota Camry Hybrid. A Toyota dealer did not install my oil filter properly. I drove the car for two weeks. I commute 80 miles each day and drive at 60+mpg. The oil light did not turn on. I finally heard the metal tapping noise getting louder, so I drove into the dealer. No oil was on the dip stick. They added 3.5 qtrs of oil. They told me that the car still had 1 qrt of oil, so no engine damage occurred. BTW… they drained the oil pan, so I can’t determine if metal shavings existed.
What measurements and what metrics should I insist they perform to prove to me that no engine damage or excessive wear occurred? There are many oily parts and many are not visible, so I need them to run certain tests using instruments that don’t lie.