This is a common myth. Most of the Infiniti parts will be interchangeable with base model Nissan partsBut what is the maintenance on an Infiniti vs a Chevy?
Do you need to use premium gas, and pay for more expensive parts?
Infiniti=Nissan
Lexus=Toyota
Acura= Honda
example, I had a 2003 Acura TL. The Acura dealership wanted $1100 for timing belt/water pump replacement.
I go down the street to the Honda dealership they said they’d do it for $650 using the exact same parts