I’ve experienced an odd phenomenon ( 2017 Kia Sorento 3.3L V6 GDI) whereby when I read the dipstick after the vehicle has been sitting overnight it shows approximately a quart low. I wipe the dip stick clean then immediately reinsert the dipstick and it reads on the full mark . I do not understand as I’ve never experienced 2 immediate, successive oil dip stick readings give such different results - how do I know the actual oil dip stick reading ?