Tough to tell, the engine has a PCV baffle system right at the fill hole, but that baffle is spotless (and I’ve seen others that’s aren’t). I’ve run three 10,000 mile intervals previously, and one 8,000 mile interval. Prior to that all 5,000 mile intervals. Just recently cut open my oil filter (from my recent 10,000 mile interval), that thing looked spotless. I’ll keep an eye on things this interval, if the oil starts getting dark very quickly I may consider changing it out, usually the color change is pretty linear throughout my intervals, all the way to 10,000...with zero consumption.