Cummins/Onan 10W30 — Engine Oil Change
Maintenance · Lubrication system
For the Cummins/Onan 10W30, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan GGHE, Cummins/Onan GGHF, Cummins/Onan WSG-1068 engine
Before you start
- Contact with used engine oil can cause cancer or reproductive toxicity. Do not contact oil or breathe vapors.
- Hot crankcase oil can cause burns if spilled or splashed on skin. Keep fingers and hands clear when removing the oil drain plug and wear protective clothing.
Parts for this job
- 123-2185 Oil filter — Cummins/Onan GGHE Amazon eBay
- 123-2185 Oil filter — Cummins/Onan GGHF Amazon eBay
Part numbers from the service-parts lists for Cummins/Onan GGHE, Cummins/Onan GGHF. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Run engine until thoroughly warm before draining oil.
- Stop the set, place a pan under the drain outlet and remove the oil drain plug or open the drain valve.
- After the oil is completely drained, replace the drain plug or close the drain valve.
- Refill with oil of the correct API viscosity grade for the temperature conditions.
Tools required
- drain pan Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Standby Power oil capacity 6.5 Qts (6.2 L)
- Prime Power oil capacity 11 Qts (10.4 L)
Full service-parts list: Cummins/Onan GGHE →, Cummins/Onan GGHF →
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.