oil pressure

AFTER THINKING ABOUT WHY THE V-MAX HAS SUCH LOW OIL PRESSURE AT IDLE , THE SHOP MANUAL SAYS 3.6 LBS. HOT AT 1,000 RPM'S ! I WAS THINKING , THE MAX DOES NOT HAVE HYDRAULIC LIFTERS , SO IT DOESN'T REQUIRE A LOT OF PRESSURE , SO I LOOKED IN THE SHOP MANUAL & IT HAS A "TROCHOID" OIL PUMP , I GOGGLED...