Originally Posted by elp_jc
Did you check the level when you bought it? Most likely it was pretty low already, so I bet it's more like 1L+, rather than 2. You need to monitor consumption starting from a known level. Read how to check oil properly (search is your friend), top it off to max, and then monitor consumption. With the lousy resolution of the sensor, there's no other way. Good luck.
... just pure "logic", my friends. When we (humans) feel hungry, we eat. When an engine needs oil or warns you for it, fill it as needed. Keep it safe, protect your investment...