Volvo VNL 780 · 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 Volvo VNL 780
| Fluid | How much | What to buy | Years | Source |
|---|---|---|---|---|
| Engine oil - D13, steel or composite pan (oil change)Change it: 60,000 mi normal; 90,000 mi (D13TC with VDS-5) | 37 qt (35 L) | Volvo VDS-4.5/CK-4 or VDS-5.0/FA-4 | 2010–2025 | Verified |
| Engine oil - D16 (oil change)Change it: 60,000 mi normal | 40 qt (38 L) | Volvo VDS-4.5/CK-4, 15W-40 | 2010–2025 | Verified |
| Engine coolantChange it: Test at PM | Not verified - consult OEM service manual | Volvo-approved extended-life coolant | 2010–2025 | Unconfirmed |
| DEF tankChange it: Fill at every fuel stop | 13-23 gal depending on option | ISO 22241 DEF | 2010–2025 | Verified |
| Fuel tankChange it: - | 100-200 gal depending on option | ULSD, 15 ppm max | 2010–2025 | Verified |
Sources: Volvo Body Builder Instructions; Volvo Body Builder Instructions VNL USA174188411; Volvo VNL 780 specification
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.