Hi,
I am trying to find out the correct oil pressure spec for my wifes A4 B6 1.8T.
The oil light came on the other day when she was driving, thought it was low level warning (yellow). After she consulted the book she told me it was the pressure light, red.
I measured the pressure this morning and it is surprizingly low.
Cold was 25-30lbs (180-210kpa)
when engine was hot 20-25lbs (150-180kpa).

My searches so far have not revealed the specs.
The car is a 2003 done 80 000k.
I was suspecting a faultly sender but tested the pressure before blindly replacing the sender.

If it is low, is the pump and pressure relief valve accessible from underneath by dropping the sump?

Thanks Neil