Excessive Oil Loss

Excessive oil consumption not due to leaks, can be defined as the use of 1.9 liters (2 quarts) of engine oil within 3200 km (2,000 miles).
- External oil leaks. Tighten bolts and/or replace gaskets and seals as necessary.
- Improper reading of oil level indicator (dipstick). Check oil with vehicle on a level surface and allow adequate drain-down time.
- Improper oil viscosity. Use recommended SAE viscosity for prevailing temperatures. Refer to Maintenance and Lubrication for engine oil specifications.
- Continuous high speed driving and/or severe usage, such as trailer hauling, will normally cause decreased oil mileage.
- Crankcase ventilation system is malfunctioning.
- Valve guides and/or valve stem seals are worn, or seals were omitted. Ream guides and install oversize service valves and/or new valve stem seals.
- Piston rings are broken, were improperly installed, are worn or are not seated. Allow adequate time for rings to seat. Replace broken or worn rings as necessary.
- Piston was improperly installed or was misfitted.