I was told by my dealer j had to have mine changed every 3k and my oil life reader was still at 85% or better every time I just figured the oil reader was wrong
Most dealers are idiots , or just trying to make more $ $ for themselves .
The crap Bulk oil from their giant tanks probably should be changed @ 3k , or better yet never be used in your new trucks engine anyways
My trucks engine was very LOUD and oil pressure @ 190° temp / idle was 24 -28 psig with the " free" bulk oil changes , and once I verified they didn't even install a new filter ! I had marked the filter previously.
The next " free " oil change the left my plug loose ! Had a giant puddle of oil under my truck the next morning , I tighten it and check the level , assuming I'd need to add oil , ha ha ha silly me , I ended up draining over a qt just to get it down to the max fill mark .
Moral of the story , change the oil & filter yourself and use a quality oil & filter , because the oil the dealer is using ( in my case ) is JUNK BULK oil that has been recycled.