All I know is they told me it was Valvoline syn.
The 3.6 has a massive oil cooler I am sure that’s the source of the copper.
It was snowing so I could not make it to the dealer or do it my self. Took it to a local garage.
Whatever oil they used it appears to have done its job.
They are a Napa garage so maybe Napa oil?
Last edited by Ken42; 05/06/20 04:47 PM. Reason: Napa “Not a Sponsor”