What is the Mack MP8?
MP8 is Mack’s 13 L diesel engine family. Mack’s catalogue distinguishes it from MP7 and the newer MP13 offerings. Its engine name spans configurations, so a general MP8 reference is not enough to establish a particular truck’s torque rating or equipment.
What matters in a comparison
On an MP8 shortlist, record engine generation, rated output and transmission model before comparing costs. Ask which brochure supports any efficiency claim, especially when turbo-compound or other package names appear in the listing. Review service history for the actual engine and aftertreatment. Comparing a used MP8 with a newer platform requires explicit allowances for age, condition and acquisition cost.
Fluids & filters
North American MP8 engines covered by the December 2023 body-builder oil/filter manual; identify emissions year and factory coolant label.
Reference checked:
Identify the unit first
Use these details to match the manufacturer's application record before choosing a fluid or ordering a filter.
- Truck VIN
- Engine model and serial number
- Engine emissions/model year
- Installed filter-housing model and original part number
- Factory coolant label and subsequent coolant-change records
- VGT versus turbocompound configuration
Fluid specifications
Engine oil — 2010–2020
2017–2020: EOS-4.5 / API CK-4. For 2010–2016, EOS-4.5 / CK-4 is recommended; EOS-4.0 / CJ-4 is the listed minimum.
Use the model-year table and approved viscosity chart. These earlier engines are not assigned the later EOS-5.0 requirement.
Source 1 ↗Engine oil — 2021 and later table
Recommended EOS-5.0 / API FA-4; listed minimum EOS-4.5 / API CK-4.
December 2023 manual’s 2021-and-newer table. Confirm current VIN-specific guidance and approved viscosity for production changes after that publication.
Source 1 ↗Engine coolant — VCS2 factory fill
Genuine VCS2, a phosphate organic acid technology (POAT) coolant.
The manufacturer records a factory change effective 24 August 2023. Use the expansion-tank decal to identify VCS2; do not select by coolant colour alone. Changing from VCS requires the specified complete purge/rinse procedure.
Source 1 ↗Engine coolant — earlier conventional/ELC fill
Heavy-duty ethylene-glycol coolant meeting ASTM D6210 or TMC RP 329, in the formulation specified for the installed system.
Earlier conventional, ELC and extended-service fills have different additive requirements. Match the factory/service label; a shared ASTM standard does not authorize mixing with VCS2.
Source 1 ↗Filter numbers & cross-references
A catalogue cross-reference links part numbers. It does not confirm that either part fits every version of this model. Match the original part to the unit first, then check the replacement manufacturer's application and any supersession.
Engine oil filter — exact-number cross-reference
First identify this exact original part through the OEM lookup for your engine serial number and VIN. Full-flow oil-filter catalogue match; confirm the actual oil-filter housing. The catalogue cross-reference alone does not confirm fitment on every engine in this family.
Application not established by this cross-reference. Confirm this original part number in the manufacturer’s parts catalogue for the exact model and serial number before considering an alternate.
Source 1 ↗Manufacturer catalogue cross-references
- Donaldson P582021Check catalogue ↗
Secondary fuel filter — exact-number cross-reference
First identify this exact original part through the OEM lookup for your engine serial number and VIN. Catalogue match only; the separator and secondary filter are different components. The catalogue cross-reference alone does not confirm fitment on every engine in this family.
Application not established by this cross-reference. Confirm this original part number in the manufacturer’s parts catalogue for the exact model and serial number before considering an alternate.
Source 1 ↗Manufacturer catalogue cross-references
- Donaldson P550529Check catalogue ↗
Mack PartsASIST — VIN-specific parts lookup ↗
Mack service-information portal ↗
What still needs unit-specific confirmation
- Confirm current part supersessions and vehicle-specific fitment through the OEM before ordering. Quantities, capacities and maintenance intervals require the serial-specific manual.
- The OEM manual says model-year 2020 VGT and model-year 2021 turbocompound MP8 engines omit the bypass oil filter. Do not order a generic three-oil-filter kit by family name.
Official service and parts references
Source 1 ↗ Source 2 ↗ Source 3 ↗ Source 4 ↗Follow the current manufacturer's manual for the identified unit. This page does not set a drain interval, fill quantity or repair procedure.
Questions to take to the supplier
- Which MP8 configuration and generation is fitted?
- What transmission and torque approval are documented?
- Are claims tied to the same engine package being sold?
Sources & limits
Manufacturer material supports the identification and overview above. Comparison considerations and supplier questions are Truck University’s original editorial interpretation, prepared with AI assistance. They are not an independent performance test or expert inspection.
Model-family reference only. Availability, specifications and service requirements can differ by year, market and configuration. Verify the actual vehicle or component using its identification and current manufacturer documentation. Do not use this page as a parts-fitment, modification, repair or loading instruction.
Published specifications and examples retain their labelled units; the header preferences apply to calculators.
Read our editorial method