Hey Folks. I am coming from a 2006 limited expedition, and looking at the 2019-2021 models right now. My 06 had a very reliable 5.4L Triton and these new ones are coming with only the 3.5L Ecoboost engines now. I've heard horror stories about this engine on this forum and in my FB groups for both the F150 and Expedition so I am a little concerned. I am most worried about the cam-phaser and wastegate issues that I have read about. But I really loved my old expedition and want to get another. So what I am looking for here is some advice. Whatever I buy, I will take to a Ford dealership and have inspected first. But what should I ask them to look for specifically? Should I ask them to check the cam phasers for any sign of damage? Are there any other known issues that I should be on the lookout for when looking at this generation?
Here's a link I found on the cam phaser issue and Ford's policy for replacing them. But this looks like the program ended on Jan 1st this year.
ford.oemdtc.com
Thanks in advance!
Here's a link I found on the cam phaser issue and Ford's policy for replacing them. But this looks like the program ended on Jan 1st this year.

Customer Satisfaction Program 21N03 - Cam Phaser Replacement - 2017-2020 Ford F-150, 2018-2020 Expedition, & 2018-2020 Lincoln Navigator
Undesirable noise may develop from the cam phasers in the 3.5L GTDI engine. This noise might occur as a rattle when starting the engine.

Thanks in advance!