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Oil Pressure Drop due to Changes in Altitude.

  • 2003
  • 911 Carrera
22 000

During a recent trip from Boise to Horseshoe Bend Idaho, a warning light came on indicating low oil pressure when driving at slow speed through the town (speed limit is 25 mph).  Elevation change from top of pass to Horseshoe Bend is approximately from 4400 ft. to 2600 ft on a steep grade with many switchbacks.  Stopped as soon as possible, shut off the engine and waited for a few minutes.  Warning light cleared and has not come on again.  Has anyone else who lives in a mountain area noticed something similar?  Has not happend on other trips throughout the region.

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