At least it has a dipstick, so that when the oil is dumped and fresh put in he will know the level.
Mine has the dipstick tube but just a plug in the end. I'm going to buy a service dipstick like they use in the garage so as to make it easier for me to change the oil on mine. At the moment I have to change the oil and filter, getting the level close with a measuring jug (as I bulk buy my oil in 20L), warm the engine by going for a short drive, park it level with just ignition on, wait two minutes, stand on one leg whistling Dixie, before it finally appears on the graphic display.
I found a document on my car for how to (temporarily) get a live reading from the dash gauge, rather than "an average over x minutes" type, which has made oil changes even quicker. A silly procedure of press this with your finger in your ear, then press the other twice quickly.
Why not just provide a bloody dipstick to fit in the already fitted
dipstick tube oil suction tube
I fill mine to just 1 bar below max, so can easily see if the oil level increases - although my engine is less prone, and my normal usage makes it even less of an issue. Plus I like to change the oil every 5k or so.... ...or this year, probably just annually