This will be a good exercise to compare between your home made and my provent
but why would you want to put dirty oil back in the motor ? Ive had the provent for a while now
and ive noticed the oil level dosnt drop in the motor but the mix of diesel and oil fumes that come from the rocker
cover turn to a black oil which in turn will contaminate your nice new clean oil and you,l need to change
earlier than you thought