on mine the operating oil pressure in the 2000 to 2500 RPM range is 40 to 43 PSI
Idle can go down to the high 20's
The engine does not produce the pressures of the 350 series engines, that you might be comparing
2002 Winnebago Ultimate Advantage 40J, Roadmaster InvisiBrake Model 8700
2012 Chevy Captiva
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