A student friend working at a truck repair shop here in Germany was told to fill new oil in to a big 10 Cylinder truck engine after an oil drain.
They had a supply hose with electric pump for the new oil. And he had the nozzle in the engine and waited until the engine was literally filled up to the top of the valve cover and had overfloated the engine.
He was surprised the engine did not start!
Years back, the Boss sent a Trainee to top up the oil in the station standby Diesel.
He seemed to have been gone a long time, so we checked, only to find him slowly & painfully "topping it up" through the dipstick hole.
At another place, the EPP diesel was situated in an underground bunker (a legacy of WW2).
Inside the bunker was what we called, for some reason "the top tank".
This was about the size of the oil heater tanks common in homes in some countries.
As it was relatively small, rather primitive provision was made for refilling, with a wooden ramp to roll 44gal (55 US, or 200l) drums up so the fuel could be poured down a tube into the tank.
One day, I went with a Trainee to do this,.
All went well for a while, then I asked him to check the gauge to see how full the tank was.
He came back to say it was about half full, so we continued, but after a while, I got a bit "antsy" & went to double check.
Fuel was pouring out of the top of the tank!
Diesel fuel was everywhere, including the floor ducts, so I spent most of the rest of the day with cleaning waste rags, sopping it up & wiping everything off.
The Trainee, of course, finished his shift & went home!
That experience has left me with an ongoing distaste for Diesel fuel.