Originally Posted by cbad335
I think 7 quarts is for N54 with oil cooler. Might be less for your 328's motor. Anyway, I'm sure that the correct amount is stated in your manual.
Manuals are based on oil capacity when the engine is dry upon first fill, you can't get all of the oil removed during an oil change. Check your oil level on the 6th quart and add to full with the final quart.