Summary of oil change intervals for different oil systems and operating conditions
| Oil lubrication system | Typical operating conditions | Approximate oil change interval1) |
| Oil bath or oil pick-up ring | Operating temperature < 50 °C (120 °F) Little risk of contamination |
12 months
|
| Operating temperature 50 to 100 °C (120 to 210 °F) Some contamination |
3 to 12 months | |
| Operating temperature > 100 °C (210 °F) Contaminated environment |
3 months
|
|
| Circulating oil or oil jet | All | Determined by test runs and regular inspection of the oil condition.
Dependent on how frequently the total oil quantity is circulated and whether or not the oil is cooled. |
- 1) More frequent oil changes are needed if the operating conditions are more demanding.
