Freightliner Columbia CL120 · fluids
Fluids & Fill AmountsHow much oil, coolant, DEF and gear oil this truck takes, and what specification to buy.
Set the year first
Then read the How much column as a refill quantity, not a dry fill. Fill to the dipstick or sight glass and treat the number as a starting point — a drain never gets everything out.
Fill amounts for Freightliner Columbia CL120
| Fluid | How much | What to buy | Years | Source |
|---|---|---|---|---|
| Engine oil - Series 60 12.7L (pan + filter)Change it: 25,000-35,000 mi by duty | 40 qt (38 L) | API CI-4+ or CK-4, 15W-40 | 2000–2007 | Verified |
| Engine oil - Series 60 14L (pan + filter)Change it: 25,000-35,000 mi by duty | 40 qt (38 L) | API CI-4+ or CK-4, 15W-40 | 2000–2010 | Verified |
| Engine coolant - ELCChange it: ELC 600,000 mi / 4 yr; SLC 300,000 mi / 2 yr | Not verified - consult OEM service manual | Detroit Power Cool ELC or SLC with SCA | 2000–2013 | Verified |
| Fuel tankChange it: - | 50-180 gal depending on option | ULSD, 15 ppm max (2007+); low-sulfur pre-2007 | 2000–2013 | Verified |
Sources: Detroit DDC-SVC-BRO-0002 coolant requirements; Freightliner Columbia specification; Series 60 Operator's Guide DDC-SVC-MAN-0039
Two ways to wreck an engine in five minutes
Overfilling an oil pan aerates the oil and can damage bearings. Running a cooling system low can crack a liner or a head before the gauge even moves. Fill slowly, then check the dipstick or sight glass twice.