Cummins/Onan CFP5E / CFP7E — Engine Oil and Oil Filter Change
Maintenance · Engine oil system
For the Cummins/Onan CFP5E / CFP7E, from the Cummins/Onan owner's manual.
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Before you start
- Avoid direct contact of hot oil with skin.
Procedure
- Operate engine until water temperature reaches 70° C (158° F). Shut off engine.
- Place container with 5 gallon (19 L) minimum capacity under oil pan drain plug.
- Remove oil drain plug and drain oil immediately.
- Clean area around oil filter canister and remove filter with filter wrench.
- Discard O-ring seal if attached; clean mounting flange with lint-free cloth.
- Apply light film of 15W-40 oil to replacement filter gasket.
- Fill filter with 15W-40 oil; install filter and tighten additional 1/4 turn.
- Install drain plug; torque to 50 N-m (37 ft-lb). Fill engine to proper level.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Oil pan drain plug: 50 N-m (37 ft-lb)
- Oil capacity: CFP5E 12 L; CFP7E 15.1 L
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.