An engine that has excessive oil consumption uses 0.9 L
(1 qt) of oil, or more, within 3 200 km (2,000 mi).
The following list indicates the conditions and corrections of excessive
oil consumption:
| • | An improperly read oil level indicator - dipstick |
| - | Inspect the oil level while the vehicle is parked on a level surface. |
| - | Allow adequate drain-down time. |
| - | Use the recommended SAE viscosity for prevailing temperatures. |
| • | Continuous high-speed driving |
| • | Severe hauling, such as a trailer. This causes decreased oil mileage. |
| • | A malfunctioning crankcase ventilation system |
| - | Tighten the bolts, as needed. |
| - | Replace the gaskets and seals, as needed. |
| • | Worn or omitted valve guides and/or valve stem seals |
| - | Install oversized service valves and/or new valve stem seals. |
| • | Broken or worn piston rings |
| • | Improperly installed or unseated piston rings |
| • | Improperly installed or improperly fitted piston |
| • | Plugged cylinder head gasket oil drain holes |
