Amounts to $200 to $400 reimbursement to the owners.
That's pretty funny. When I had my chains done under my CPO warranty, the dealer service rep called and "strongly" recommended I needed about $200 to $400 in non-covered work.
For example, and just as a indicator of how B.S. warranty work can be, the service advisor told me that the warranty covered all the timing chain job but not an oil change.
Anyway, I easily agreed to the additional work because I felt like they were doing me a solid with all the stuff they did under the warranty (it wasn't just timing chains).