Thanks for your answers. I’ll check the pcv valve.
i’m not sure how much is leaking, i suspect most of it is burn since there’s no signs of leakage under the car. Oil consumptionis monre noticeable on long highway runs. I understand synthetic oil by nature is thinner and may get past the seals easier, but conventional oil should gum up the seals a bit and theoretically help prevent oil loss,… or maybe not?