Hole in one of the piston allowing combustion pressure into the crankcase.
you have a ring problem
In the vicinity of 2200 lbs. Detroit's official stated weight is 2190 lbs, but that was for the pre-emissions 50 Series.
Not enough.
Too much oil or a blockage in the return line.
If you are losing coolant, you probably have a bad cylinder head gasket. Too much coolant system pressure will drop your engine oil pressure.
250
5.00
This depends entirly on the car. The sensor on my Detroit 60 series cost $450
ten us gallons
The 2007 BMW 3-Series's engine produces 200 ft-lbs. @ 2750 rpm.
The 2005 BMW 3-Series's engine produces 175 ft-lbs. @ 3500 rpm.
The 2003 BMW 3-Series's engine produces 175 ft-lbs. @ 3500 rpm.
The 2003 BMW 7-Series's engine produces 330 ft-lbs. @ 3600 rpm.