Mack Trucks are well known for their rugged build, long-haul reliability, and powerful engines. Like any heavy-duty machine, these engines require regular oil maintenance to ensure peak performance and longevity. This post provides a detailed Mack engine oil capacity chart for various models, along with tips for maintaining optimal oil levels and choosing the right oil type.
Mack Engine Oil Capacity Chart
| Mack Engine Model | Oil Capacity (With Filter) | Oil Capacity (Without Filter) | Recommended Oil Type |
|---|---|---|---|
| Mack MP7 | 38 quarts (36 liters) | 36 quarts (34 liters) | 10W-30 or 15W-40 CJ-4/CK-4 |
| Mack MP8 | 42 quarts (40 liters) | 40 quarts (38 liters) | 10W-30 or 15W-40 CJ-4/CK-4 |
| Mack MP8HE | 42 quarts (40 liters) | 40 quarts (38 liters) | 10W-30 Low Viscosity CK-4 |
| Mack MP10 | 48 quarts (45 liters) | 46 quarts (43 liters) | 15W-40 CK-4 |
| Mack E7 (All Variants) | 36 quarts (34 liters) | 34 quarts (32 liters) | 15W-40 CI-4/CJ-4 |
| Mack E6 | 30 quarts (28 liters) | 28 quarts (26 liters) | 15W-40 CI-4 |
| Mack ASET AC | 38 quarts (36 liters) | 36 quarts (34 liters) | 15W-40 CI-4/CJ-4 |
| Mack ASET AI | 36 quarts (34 liters) | 34 quarts (32 liters) | 15W-40 CI-4/CJ-4 |
| Mack EM6 | 28 quarts (26 liters) | 26 quarts (24 liters) | 15W-40 |
| Mack END673 | 26 quarts (24 liters) | 24 quarts (23 liters) | SAE 30 or 15W-40 |
| Mack E9 V8 | 48 quarts (45 liters) | 46 quarts (43 liters) | 15W-40 |
| Mack EM7 | 32 quarts (30 liters) | 30 quarts (28 liters) | 15W-40 CI-4 |
| Mack Thermodyne ENDT673 | 25 quarts (24 liters) | 23 quarts (22 liters) | 30W or 15W-40 |
| Mack ENDT675 | 26 quarts (25 liters) | 24 quarts (23 liters) | 15W-40 |
| Mack Maxidyne ENDT676 | 30 quarts (28 liters) | 28 quarts (26 liters) | 15W-40 |
| Mack Maxidyne ENDT678 | 30 quarts (28 liters) | 28 quarts (26 liters) | 15W-40 |
| Mack Intercooler E7 427 | 36 quarts (34 liters) | 34 quarts (32 liters) | 15W-40 |
| Mack MP8-TC (Turbo Comp.) | 42 quarts (40 liters) | 40 quarts (38 liters) | 10W-30 or 15W-40 |
| Mack Maxitorque T300 | 38 quarts (36 liters) | 36 quarts (34 liters) | 15W-40 |
| Mack E7 PLN | 36 quarts (34 liters) | 34 quarts (32 liters) | 15W-40 CI-4/CJ-4 |
| Mack E7-350 | 36 quarts (34 liters) | 34 quarts (32 liters) | 15W-40 CI-4/CJ-4 |
| Mack E7-400 | 36 quarts (34 liters) | 34 quarts (32 liters) | 15W-40 CI-4/CJ-4 |
| Mack MP7-395C | 38 quarts (36 liters) | 36 quarts (34 liters) | 10W-30 or 15W-40 CJ-4/CK-4 |
| Mack MP8-445C | 42 quarts (40 liters) | 40 quarts (38 liters) | 10W-30 or 15W-40 CJ-4/CK-4 |
| Mack E9-500 V8 | 48 quarts (45 liters) | 46 quarts (43 liters) | 15W-40 |
Note:
Oil capacities may vary slightly depending on specific engine configurations, sump size, or additional components like PTO systems.
Some older Mack engines, like the Thermodyne or Maxidyne series, may be in classic trucks or off-road vocational vehicles. Use caution when refilling and always double-check dipstick levels.
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Choosing the Right Oil for Your Mack Engine
The oil you choose should meet or exceed Mack’s EO-N Premium Plus or API CK-4/FA-4 specifications. The most commonly used oils for Mack engines include:
- 15W-40: Ideal for warmer climates and heavy-duty applications. Provides excellent wear protection and viscosity stability.
- 10W-30: Recommended for newer engines and better fuel economy, especially in colder environments.
- Synthetic Blends or Full Synthetics: Offer improved thermal stability, especially under high-load or extreme temperature conditions.
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How Often Should You Change Mack Engine Oil?
Oil change intervals for Mack engines depend on several factors:
- Engine Model: Newer MP engines with advanced oil filtration can go longer between oil changes.
- Duty Cycle: Long-haul trucks may travel up to 50,000 miles, while vocational or stop-and-go applications may require service as often as every 15,000 to 25,000 miles.
- Oil Type: Synthetic oils typically allow for longer intervals.
- Operating Conditions: Dust, temperature, and idling all affect oil life.
Rule of Thumb: Check the manual for your specific engine model, but for most Mack trucks, oil change intervals range between 25,000 to 50,000 miles.
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Signs You Need an Oil Change
Watch out for these warning signs:
- Increased engine noise
- Oil pressure warning light
- Excessive exhaust smoke
- Dark, dirty oil on the dipstick
- Reduced fuel efficiency
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Tips for Maintaining Proper Oil Levels
- Use the Dipstick Correctly: Check oil level when the engine is cold and the truck is on level ground.
- Warm Up the Engine Before Draining: This helps oil drain more completely.
- Replace the Oil Filter Every Time: A clogged filter can reduce oil pressure and harm the engine.
- Inspect for Leaks: Around seals, gaskets, and the oil pan regularly.
- Log Your Oil Changes: Keeping records helps with diagnostics and resale value.
