I agree with Dave, as I have close to 90k on my current '13 FJR and never checked oil pressure per S/M. Neither on my '07 FJR. Oil light goes off, it's got plenty of pressure in my brain.
Suggest changing the oil and filter and fill with proper amount of engine oil. Right at 4.25 quarts.
and DO NOT torque the drain bolt to the 31 ft/lb as the manual indicates. That has to be a lingering error and would hate for one to have to replace an oil pan.
As it's new to you, also suggest changing the rear drive shaft oil along with brake and clutch fluid change.
ʎɐqǝ uo pɹɐoqʎǝʞ ɐ ʎnq ı ǝɯıʇ ʇsɐן ǝɥʇ sı sıɥʇ
2013 Stone Grey