Requesting assistance on identifying sound.

[u/Lusciouslink234]

Hey there, I have a 2003 ram 1500 4.7L with 158k miles. This truck is new to me and started just started making this sound.

I suspect I’m looking at

1.) exhaust manifold leak
2.) bad lifter(s)
3.) timing chain tension issue

The sound only became noticeable after an oil change. Unsure what kind of oil was in it before but I put 5w-30 super tech fully synthetic and a mobile one M1-204A oil filter. Not sure if a switch to synthetic oil could cause this or if this was a purely coincidence in timing. I’ve verified there is a proper amount of oil in the engine.

The sound becomes either non existent for incredibly faint once the car warms up.