Good afternoon.
The power steering line has no connection to the oil pressure in the engine.
The oil gauge is electrically controlled by a sensor. There should be no connection between the two.
As far as the pressure, your readings are normal. As far as the drop in pressure, I would not be concerned about it. If you are that concerned, change the oil and filter and see if it returns to the reading.
Adding the one quart of oil should not affect the reading at all.
Roy
SPONSORED LINKS
Friday, March 9th, 2018 AT 9:55 AM