Up until a week ago when I was driving and accelerating my oil pressure when sit at around 60 PSI and idle at 30 PSI. Within the past week it still idles at the same pressure, but when I'm accelerating it will go up to around 90 or so PSI in gears 1-4. 5th gear is still around that 60 point, but in the other gears while accelerating it goes to that 90 and then sits at around 75 or 80 PSI. I was wondering what could be the cause of this change? I check my oil level pretty regularly and top it off when need be.

 

Have you tried another gauge and sender to rules those out?