Cummins/Onan 5.6TGHAA11381C — Changing Engine Oil and Oil Filter
Maintenance
For the Cummins/Onan 5.6TGHAA11381C, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan TGHAA
Before you start
- Contact with used engine oil can cause cancer or reproductive toxicity. Use rubber gloves and wash exposed skin.
Parts for this job
Part numbers from the service-parts list for Cummins/Onan TGHAA. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Place a pan under the oil drain plug. Run engine until warm and shut it off.
- Remove oil fill cap, open oil drain valve and allow all oil to drain.
- Close oil drain valve.
- Spin off oil filter canister and discard.
- Wipe off filter mounting surface.
- Make sure gasket is in place on new filter and apply thin film of oil.
- Spin on new filter by hand until gasket touches mounting pad, then turn additional 1/2 to 3/4 turn. Do not over-tighten.
- Refill with Mobil 1 Formula 15W-50 synthetic motor oil or equivalent. Check oil level.
- Screw oil fill cap on securely.
- Dispose of used oil properly.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Mobil 1 Formula 15W-50 synthetic motor oil or equivalent
- Oil capacity 3.3 L (3.5 quart) with filter
Full service-parts list: Cummins/Onan TGHAA →
Source: Cummins/Onan operator'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.