Oil level

[Sundevil64]

I have a new to me Boxster, 2001 sport base (sport seats and 18" wheels, 2.7L) with 25k miles. I changed the oil and filter. The filter was clean of any debris as well as the magnet oil plug. I refilled it with 0-40 Mobil 1. I have having a hard time reading the level of oil in the car. I have put in 10 qtrs. Adding 1/2 qt at a time after crossing the 7 qt mark. The manual says volume is 9.3 its with filter.

Wouldn't I see it on the dip stick? The oil level gauge is not giving a reading either. Oil pressure is fine. I don't want to under fill it or over fill it.

How reliable is the oil level indicator? I always go by the dip stick as that has never lied to me.

Thanks.