Oil And Filter: Inspection

Check engine oil quality.
1. Check the oil for deterioration, entry of water, discoloring or thinning.
2. If the quality is visibly poor, replace the oil.
  Oil grade:
  
  API grade SJ, Energy-Conserving or ILSAC multigrade engine oil. SAE 5W-30 is the best choice for your vehicle, for good fuel economy, and good starting in cold weather.
Fig 1: Displaying Recommended Oil Viscosity
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Check engine oil level.
1. Warm up the engine. Turn it off and let it sit for 5 minutes. The oil level should be between "L" and "F" of the dipstick. If low, check for leakage and add oil up to "F" mark.
  NOTE: Do not fill with engine oil above the "F" mark.
Remove engine under cover.
Remove oil pressure switch.
1. Disconnect the oil pressure switch connector.
2. Remove the oil pressure switch.
Install oil pressure gauge.

Fig 3: Identifying Oil Pressure Gauge
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Warm up engine.
1. Allow the engine to warm up to normal operating temperature.
Check oil pressure.
1. Oil pressure:
  
  Fig 4: Displaying Oil Pressure Under Different Conditions
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Remove oil pressure gauge.
Reinstall oil pressure switch.
1. Apply adhesive to 2 or 3 threads of the oil pressure switch.
  Adhesive:
  
  Part No. 08833-00080, THREE BOND 1344, LOCTITE 242 or equivalent
  
  Fig 5: Applying Adhesive To Threads
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Reinstall the oil pressure switch.
  
  Fig 6: Identifying Oil Pressure Switch
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Start engine and check for engine oil leaks.
Reinstall engine under cover.