The Z3 oil capacity depends on the engine/model.
1996 328i holds how many quarts of oil ?
7 quarts
It should tell you in your owners manual. I have a 1996 BMW 740IL and it takes 8 quarts
A 1998 BMW 740il requires 8 quarts of engine oil.
7.5 quarts
Seven quarts
9 quarts on the e39
7 quarts
8.5 quarts
7.7 quarts
8 quarts
6.9 quarts