Welcome. Yes, oil pressure drops down to 2 or lower on idle, then should peg again on acceleration. Your car is a 124.032 chassis, which was designated 300E until the end of MY 1993, then changed to E320 when the entire line was re-badged beginning in MY 1994.

__________________
1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
MBCA member

Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

There are only 10 kinds of people in the world--those who understand binary and those who don't