I developed a loud lifter tick on the drivers side last week. 2015 jku sport s with 19k. This stated as an intermittent tick an quickly turned full time. I've used pensoil platinum synthetic 5w 20 changed every 5k miles. Had it to the dealer today, they diagnosed it as a collapsed lifter and said they ordered all the lifters for the drivers side and will be replacing them. Anyone else have this issue? I've seen the posts about the 2012 heads being an issue but not later models. Hopefully the lifter replacement will fix it. Goes back in Friday for the repair.