You are fortunate.........so don't complain :B
You have 2 places to use when adding oil........top or bottom.
Top is just like your vehicle engine........right into the valve cover. Nice and easy to use....oil flows as you pour it in.
Bottom is for checking oil level (dip stick) but lots of times that is the only place to add oil. Very slow, messy, as the oil has to flow against itself back into sump.
It would be like having to add oil on a vehicles dip stick tube.
So be happy you have 2 places.
And use the top one........easier.
