1985 Jeep Wagoneer oil pressure

1985 JEEP WAGONEER
42,000 MILES • 6 CYL • 4WD • AUTOMATIC
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JEFFREY JOHNSON
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  • 1 POST
I installed a manual oil pressure guage thinking that the electric guage was faulty. It reads the same. When it is cold it is 40lbs at idle and 70 lbs at highway speed. After it is warm it reads 5 lbs. at idle,,almost 20 at highway speed. It uses no oil,,sounds and runs well. Oil is changed every 2500 miles. Please help
Sep 22, 2009 at 12:50 PM
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JEEPFAN
  • ✓ASE Certified Mechanic
  • 135 POSTS
  • ASE Certified Mechanic
sounds normal when your oil is cold it take more pressure to pump then when it warms up and the viscosity wearrs down as long as you dont have any valve train noise dont worry about it if you add a quart of lucas oil additive that will also help
Nov 12, 2009 at 11:59 PM
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