[speeddevil456789]

Hi, i own a 92 supra with 120000 miles on it N/A and i had it for a good 4 months now and it runs perfect the only thing i noticed 2 days ago my oil press gauge is showing me thats its almost at the idling pressure and just above normal driving pressure, but before that it was always at 40 pounds of pressure now it wont even go up that high, does someone have any idea whats going on? Thank you