Need to know where to add oil. on 1990 BMW 325i

Owners Manual does not say where the location is to add oil.

Asked by for the 1990 BMW 325i
2 answers
The engine oil filler cap is located in the center front of the valve cover on top of the engine.
Do you mean motor oil? What kind of oil do you want to add?
Let us know, so we can help.