Honda J35

Honda's 3.5-litre 60° V6, designed in Japan and engineered and built in the United States — the engine of the Odyssey, Pilot, larger Accords and most Acura SUVs for over two decades.

Variable Cylinder Management is the single most consequential thing to know about it. VCM shuts down cylinders under light load to save fuel, and the consequences are well documented: the deactivated cylinders run cool and their spark plugs foul, the rings can glaze and the engine begins consuming oil, and the varying torque loads accelerate wear on the engine mounts — particularly the active hydraulic ones — which is why a J35 that vibrates at idle is often a mount problem rather than an engine one.

That cluster produces a characteristic presentation: misfire codes on one bank, oil consumption, and a vibration, all at once, on a well-maintained car. Read them as one system rather than three faults. Not every application uses VCM, so confirming whether it is fitted is the first question, not a detail.