Exact same problem as a previous post -<br /><br />"Just bought a 1999 boat with Volvo 5.7L. Oil pressure drops to under 10psi at 600 RPM after running WOT (wide open throttle) for a few minutes. Returns to 40psi at 1,000 RPM and 60-70 at high speed. Not the gauge. Only 200 hrs. Got any...
