Cummins/Onan — Lubricating Oil and Filters - Drain and Fill
Maintenance · Lubricating Oil System
From a Cummins/Onan owner's manual covering: M11, M1i Series Engines, ps200da. Check it applies to your exact model before use.
Applies to: Cummins/Onan M11 engine
Before you start
- Avoid direct contact of hot oil with your skin.
- Used engine oil can be carcinogenic and can cause reproductive toxicity.
Procedure
- Operate the engine until the water temperature reaches 60 C [140 F]. Shut off the engine.
- Remove the oil drain plug from the bottom of the lubricating oil pan.
- Clean the area around the lubricating oil filter head.
- Use oil filter wrench, Part No. 3375049, to remove the filter.
- Clean the gasket surface of the filter head and remove the o-ring if stuck.
- Use clean 15W-40 oil to coat the gasket surface of the new filter.
- Fill the filter with clean 15W-40 oil.
- Install the filter; tighten until gasket contacts head, then one-half to three-fourths turn more.
- Install the oil drain plug.
- Fill the engine with clean oil to the correct level.
- Operate the engine at idle speed and inspect for leaks.
- Shut off the engine, wait approximately 10 minutes, then check the oil level.
Tools required
- Oil filter wrench, Part No. 3375049 Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Oil pan drain plug torque: 88 Nm [65 ft-lb]
- Total system capacity including filter approximately 39 liters [10.3 U.S. gal]
Source: Cummins/Onan owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.