It's only a little can and agree easy to overfill, I just dropped some out of my sump as it was above full, with the upside down filter that empties in the yd25 at least, I presume you need to check when cold and that oil has flowed back into the sump, never had a vehicle with an upside down filter before but handy when changing.
Grandson no2 installed a catch can on his 3l d22 and he had to change it at least once a month but was doing lots of klm's and motor had done 300k but oil in sump was clean.