My 2016 Ford Fusion has about 29,000 miles. I brought it to Valvoline for an oil change where they informed me I had metal shavings in my oil. Brought it to the dealership where I purchased the car (still under warranty) and they also found metal shavings in the oil. They told me that the crank shaft was rubbing against the aluminum block. In order to be covered under warranty, I needed to submit my oil change receipts, which I did. Then I was informed that they needed to do a full engine tear down for the warranty. Fast forward two months and they still hadn’t done it. Finally they call today and say they changed the oil, took it for a test drive and no longer found metal shavings in the oil so I’m all set. No explanation for how the metal shavings originally appeared or why they no longer believe the crank shaft is rubbing against the aluminum block.
This all seems suspicious to me. So my question is what could have caused the metal shavings to appear in the oil? Does it seem likely that all of a sudden the car is working properly just by doing another oil change? I’m not getting straight answers from the dealership and wanted to see what other people thought.