Hello Gremlin, Did your 2021 Ram get diagnosed? My 2019 Rebel recently started the "ticking noise" passenger side of engine. This noise is loudest when started cold mornings, then calms down while engine is warming in about 20-30 seconds. I use Premium Fuel only $$$! and Royal Purple 5-20. I have only 44K on the engine. You can send me an email to [email protected] I can send a video. Thank You Rondo 13