I've got a 2015 6.2 with ~82k miles on it. Recently, about 2 weeks ago, I noticed the engine was making a much louder ticking sound than it used it, but I only notice it once the engine is warmed up (haven't heard it on a cold start yet). The noise does vary with rpm, but there does not seem to be any loss of power or mileage. Any recommendations of easy things to check or should I just bring it in to the dealer? We really only drive it on weekends, and I've put maybe 500 miles on it since I first noticed the tick.
Thanks.
Edit: I forgot to mention that the noise is much more noticeable from the passenger side of the engine bay, and that I cannot hear it at all inside the cab when driving, but the ticking is definitely considerably louder than the engine used to be.