2019 ram rebel 5.7 engine Metallic rattle/tick

[Mayo2619]

Thanks for help in advance
2019 ram rebel 5.7 3.92 gears
For the past 6 months my engines been making a tapping metallic tick into a rattle grinding noise under light load brought it to the dealership and they stated it was normal lifter noise the truck has not made this noise prior now taking it to another dealership to look at it again noise usually happens when mds is on at 35 up to 80mph under light load

 

[jj141979]

What octane gas you using? If its 87 then try a few tanks of 89 or 93 and see if it goes away

 

[SKT Customs]

That does seem like the lifters but I’m surprised it does it under light load. What about at full throttle?
I refuse to believe it’s normal and you should try to pressure them into fixing it before it goes out of warranty. Replacing the lifters (and then possibly camshaft) will be thousands if it’s out of warranty. My truck makes the same sound at 3/4-full throttle