As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURN BACK FLIGHT 8801. JUST AFTER TAKEOFF, THE OIL PRESSURE INCREASED TO THE RED LINE ON THE INDICATOR. DECIDED TO RETURN TO THE RAMP & DID AN AIR TURN BACK. NO EMERGENCY WAS DECLARED. TROUBLE SHOT & REPLACED THE OIL PRESSURE & TEMPERATURE INDICATOR. OPERATIONS CHECKED & ENGINE RUNS GOOD. AIRCRAFT RETURNED TO SERVICE.