200tq oil pressure spec?

[Konstantin Bogach]

Hi all,

I have impression that  in-dash oil pressure gauge shows smaller and
smaller pressure in my 200tq 89.  When I bought it  pressure was around
1.4  at idle (warm engine). In 6 month it is close to 1.1.  What is the
spec?   Sorry, could not find it in Bently.   What is resonable pressure
spec for the car with 140,000 mi.

Shall I trust to in-dash gauge?

Thanks.

Konstantin Bogach.

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