It’s rare for a 4 cylinder Nissan engine to have excessive oil consumption. I would have it examined, but I also want to point out that getting a good reading on the oil level can be tricky and the thin synthetic oil used today does not seem to cling to the dipstick like it did in the past. Hopefully, your friend misread the oil level, and you were just a bit low. It’s best to measure first thing in the morning when the engine is cold and all the oil has had a chance to get to the drain pan.