Is 4.5 Quarts The Oil Change Refill Capacity With Filter Change As Specified For Your Engine?
I assume that you are using the owner’s manual. You’ve done this before without incident? The stick is seating in all the way? The oil did go into the engine?
How much space is there from the bottom of the dipstick where you’re seeing oil and the “cross-hatch” or “oil full” range on the stick. Is the bottom end of the stick right at the end of the very beginning of the “oil full” range? You could try adding just a few more ounces of oil (but not more than say 8) just to see if it is coming up on the stick any.
This is not ordinary. Personally, I wouldn’t run it until I got to the bottom of this mystery. There is no serious damage yet, why create some?