Cadillac Repair: Oil Pressure, cadillac seville sts, oil pressure switch

Question
How do u check the oil pressure in a 1991 Cadillac seville STS?

Answer
Put a "T" fitting in where the oil pressure switch is at the oil filter and install the oil pressure switch to one side of the "T" and an external oil pressure gage to the other side of the "T" fitting.

Idle speed = 11 lbs.

2000 rpm's = approx 55 lbs.