How would a very long distance travel affect oil life and OCI? I'm contempleting a East to West Coast trip, but I am uncertain if I would still need to change the oil at 5k per the Mazda Connect system, or can I go longer? I know the general rule of thumb that stop and go city driving is hardest on the oil, but what about long stretches of consistent highway miles and stable rpm? This is for a 2020 Mazda3 with the 2.5 and SkyActiv AT. I'm almost at the end for the Factory Fill