2025 manual here, 0 issues with the new engine. As a mechanic that also has to deal with Ford for warranty work, i say DEFINITELY contact them and have them decide whether they are picking it up or you are dropping it off and record/document the conversation. Because if something happens on...
Could you please tell me EXACTLY how the OE (Ford) ecu would "know" what octane is being used? Many make statements but i want reality.
Since there's no such thing as an octane sensor on these and since the upstream O2 can't detect octane, only the lack of O2 in the exhaust stream.
I have a...