T100 Extra Cab Pickup 4WD V6-3.4L (5VZ-FE) (1997)
Engine Oil: Testing and Inspection
Oil Quality Check
1. Check engine oil quality.
Check the oil for deterioration, entry of water, discoloring or thinning.
If the oil quality is visibly poor, replace it.
2. Oil grade:
API grade SH, Energy-Conserving II multigrade engine oil or ILSAC multigrade engine oil.
Recommended viscosity is as shown in the illustration, with SAE 5W-30 being the preferred engine oil.