C-172RG flight instructor reported a rejected takeoff due to a high oil pressure indication.

Attributes
ACN	1757289
Time
Date	202008
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Flight Plan	VFR
Component
Aircraft Component	Powerplant Lubrication System
Person 1
Function	Pilot Not Flying Instructor
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 83 Flight Crew Total 1689 Flight Crew Type 119
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

I was involved in an aborted takeoff on runway xxr at ZZZ. I was sitting left seat as the instructor on a checkout flight to teach a commercial course at the flight school. During the run up with RPM at 1800; I noticed the oil pressure to be at the upper limits of the pressure gauge. After the run-up was complete I briefed the pilot flying of the oil pressure and we briefed the possibility of an aborted takeoff. On the takeoff roll at full power I advised the pilot flying of the very high oil pressure so the pilot called to abort takeoff. The pilot flying controlled the aircraft and tasked me with advising ATC. Once clear of the runway the oil pressure dropped to within the limits and we were able to taxi to our parking. We returned to base and wrote up a discrepancy on the issue.

Original NASA ASRS Text

Title: C-172RG Flight Instructor reported a rejected takeoff due to a high oil pressure indication.

Narrative: I was involved in an aborted takeoff on Runway XXR at ZZZ. I was sitting left seat as the instructor on a checkout flight to teach a commercial course at the flight school. During the run up with RPM at 1800; I noticed the oil pressure to be at the upper limits of the pressure gauge. After the run-up was complete I briefed the pilot flying of the oil pressure and we briefed the possibility of an aborted takeoff. On the takeoff roll at full power I advised the pilot flying of the very high oil pressure so the pilot called to abort takeoff. The pilot flying controlled the aircraft and tasked me with advising ATC. Once clear of the runway the oil pressure dropped to within the limits and we were able to taxi to our parking. We returned to base and wrote up a discrepancy on the issue.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.