Eco diesel engine noise

[will2survu]

Hi
My 2015 truck has 144k miles and has recently started to have a sticky valve noise that starts around 60 miles per hour and gets louder as the speed increases, disappearing at lower speeds, any clues?

 

[crash68]

you might want to post a sound clip or video as the actual sound might be easier to identify.
Check the flange bolts on the exhaust near the DPF/SCR as they're prone to breaking.