Currently own a 2024 GMC Sierra 1500 with a L84D 5.3 with DFM. I'm just curious what's the fuel dilution like on these direct injected 5.3? I'm most likely going to stick with the OLM interval 5-7.5k mile OCI. I usually run extended OCI on my vehicles but most newer DI make it impossible. My 21 outback gets 4-5% in as little as 3k miles. If they don't have dilution issues I may go to my usual 10-12k annual Amsoil signature/ filter oil change. Not many UOA on 2019+ 5.3 to make a decision.