Rod knock?
 

So after a 2 hour cruise to a car show at 85 miles per hour with multiple pulls, the car developed a this tick on the way off the highway, I don't think it was quite as loud as this one but it was an unusual noise none the less. I pulled into the show 30 minutes later and the noise had stopped. I left the car alone for maybe 4-5 hours, I started to car up to leave at it made no ticking at all. Then I pulled over about a 1/2 mile down the road and the ticking came back, probably as bad as it is in the video. Then I topped it off with oil and proceeded to try and get the car 100 miles home. I pulled over maybe an hour or so in to the trip home and the ticking was still there, but this time at idle. I drove the car home, the car drove normally and ran great except for the ticking. I'm hoping it might be a collapsed lifter, but my gut tells me elsewise. I pulled my intake cam, where it sounded like it was coming from and one of the lifters is a bit softer and click-ier than the other ones, I'll be replacing them with a spare set I have lying around. I also was using 10w-30 which has maybe 2-2.5k on it, so I will also switch to rotella 5w of some sort. Opinions on whether it's lifter or knock?

I hear a couple different noises in the video, so maybe both? :party:

The going away and coming back sounds like textbook lifter tick though.

the high pitched ticking is the injectors, those gt500's are very clanky

I'm leaning towards a nasty lifter tick. Doesn't sound guttural enough to be rod knock.

Doesn't sound like rod knock. Rod knock has a deeper sound to it.

Is it low on oil? Maybe broken valve spring or something like that.

I figured this, and like I said I put maybe another .5 quart of 10w-30 in and it didn't seem to change anything, and from what the dip stick told me the car was good on oil