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high oil pressure

  1. OEM Issues
    Hey you guys! New member here... Have seen many threads concerning LOW oil pressure but... just got a 2005 TB with just over 116,000 miles. Noticed this morning the oil pressure gauge was reading high (60-80psi). Any idea what would cause this?? According to the previous owner, the oil was...
  2. Engine Tunes/Mods
    Ok not sure if I am in the right forum but here it goes... I have an 03 Trailblazer LT EXT 118,000 miles... it has been idling rough for a few months..the hubby changed the spark plugs and found oil on the threads...getting really bad gas mileage...oil pressure is higher, ranging between 40-60...