Mack Anthem 64T · 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 Mack Anthem 64T
| Fluid | How much | What to buy | Years | Source |
|---|---|---|---|---|
| Engine oil - Mack MP8Change it: 25,000 mi highway; 15,000 mi severe | 44 qt (42 L) | Mack EOS-4.5 / EO-O Premium Plus, 15W-40 CK-4; 5W-30 FA-4 approved 2017+ | 2017–2026 | Verified |
| Engine oil - MP8 (third-party figure)Change it: 25,000 mi highway | 40 qt (10 gal) service fill with filter | As above | 2017–2026 | Unconfirmed |
| Engine coolantChange it: Test at PM | Not verified - consult OEM service manual | Mack VCS2 coolant (from Aug 24 2023); VCS red for earlier builds | 2018–2026 | Unconfirmed |
| Diesel exhaust fluid (DEF / AdBlue) tankChange it: Fill at every fuel stop | 25 gal (95 L) or 33 gal (125 L) by tank option | ISO 22241 DEF | 2018–2026 | Verified |
| Fuel tankChange it: - | Up to 224-383 gal depending on cab and tank package | ULSD, 15 ppm max | 2018–2026 | Verified |
| Transmission - mDRIVEChange it: Not verified - consult OEM service manual | Not verified - consult OEM service manual | Mack-approved transmission oil | 2018–2026 | Unconfirmed |
| Rear axle / differentialChange it: Not verified - consult OEM service manual | Not verified - consult OEM service manual | SAE 75W-90 / 75W-140 synthetic per axle maker | 2018–2026 | Unconfirmed |
Sources: Mack Anthem specification sheet; Mack Body Builder Instructions - 'refer to your Owners Manual for coolant capacity'; Mack Body Builder Instructions USA189962715 (8.2025); Third-party oil reference - conflicts with Mack's 44 qt
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.