Mack CL series

Manual transmission fluid capacity & service interval

Mack CL series manual transmission fluid capacity is 14,2 liters. Service intervals include 400000 km/24 months, 800000 km/36 months, 64000 km/12 months/1200 hours, and 128000 km/12 months/1200 hours. The data covers 28 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
CL703 (2002-2004)
  • Use: Normal
  • Capacity 14,2 liter
  • Change 400000 km/ 24 months
  • Code: T-310M 10/2
CL703 (2002-2004)
  • Use: Long distance
  • Capacity 14,2 liter
  • Change 800000 km/ 36 months
  • Code: T-310M 10/2
CL703 (2002-2004)
  • Use: Vocational
  • Capacity 14,2 liter
  • Change 64000 km/ 12 months/ 1200 hours
  • Code: T-310M 10/2
CL703 (2002-2004)
  • Use: Vocational, extended
  • Capacity 14,2 liter
  • Change 128000 km/ 12 months/ 1200 hours
  • Code: T-310M 10/2
CL703 (2002-2004)
  • Use: Normal
  • Capacity 14,2 liter
  • Change 400000 km/ 24 months
  • Code: T-310ME 10/2
CL703 (2002-2004)
  • Use: Long distance
  • Capacity 14,2 liter
  • Change 800000 km/ 36 months
  • Code: T-310ME 10/2
CL703 (2002-2004)
  • Use: Vocational
  • Capacity 14,2 liter
  • Change 64000 km/ 12 months/ 1200 hours
  • Code: T-310ME 10/2
CL703 (2002-2004)
  • Use: Vocational, extended
  • Capacity 14,2 liter
  • Change 128000 km/ 12 months/ 1200 hours
  • Code: T-310ME 10/2
CL703 (2002-2004)
  • Use: Normal
  • Capacity 14,2 liter
  • Change 400000 km/ 24 months
  • Code: T-310ML 10/2
CL703 (2002-2004)
  • Use: Long distance
  • Capacity 14,2 liter
  • Change 800000 km/ 36 months
  • Code: T-310ML 10/2
CL703 (2002-2004)
  • Use: Vocational
  • Capacity 14,2 liter
  • Change 64000 km/ 12 months/ 1200 hours
  • Code: T-310ML 10/2
CL703 (2002-2004)
  • Use: Vocational, extended
  • Capacity 14,2 liter
  • Change 128000 km/ 12 months/ 1200 hours
  • Code: T-310ML 10/2
CL703 (2002-2004)
  • Use: Normal
  • Capacity 14,2 liter
  • Change 400000 km/ 24 months
  • Code: T-313 L 13/2
CL703 (2002-2004)
  • Use: Long distance
  • Capacity 14,2 liter
  • Change 800000 km/ 36 months
  • Code: T-313 L 13/2
CL703 (2002-2004)
  • Use: Vocational
  • Capacity 14,2 liter
  • Change 64000 km/ 12 months/ 1200 hours
  • Code: T-313 L 13/2
CL703 (2002-2004)
  • Use: Vocational, extended
  • Capacity 14,2 liter
  • Change 128000 km/ 12 months/ 1200 hours
  • Code: T-313 L 13/2
CL703 (2002-2004)
  • Use: Normal
  • Capacity 14,2 liter
  • Change 400000 km/ 24 months
  • Code: T-313LR 13/2
CL703 (2002-2004)
  • Use: Long distance
  • Capacity 14,2 liter
  • Change 800000 km/ 36 months
  • Code: T-313LR 13/2
CL703 (2002-2004)
  • Use: Vocational
  • Capacity 14,2 liter
  • Change 64000 km/ 12 months/ 1200 hours
  • Code: T-313LR 13/2
CL703 (2002-2004)
  • Use: Vocational, extended
  • Capacity 14,2 liter
  • Change 128000 km/ 12 months/ 1200 hours
  • Code: T-313LR 13/2
CL703 (2002-2004)
  • Use: Normal
  • Capacity 14,2 liter
  • Change 400000 km/ 24 months
  • Code: T-318 L 18/3
CL703 (2002-2004)
  • Use: Long distance
  • Capacity 14,2 liter
  • Change 800000 km/ 36 months
  • Code: T-318 L 18/3
CL703 (2002-2004)
  • Use: Vocational
  • Capacity 14,2 liter
  • Change 64000 km/ 12 months/ 1200 hours
  • Code: T-318 L 18/3
CL703 (2002-2004)
  • Use: Vocational, extended
  • Capacity 14,2 liter
  • Change 128000 km/ 12 months/ 1200 hours
  • Code: T-318 L 18/3
CL703 (2002-2004)
  • Use: Normal
  • Capacity 14,2 liter
  • Change 400000 km/ 24 months
  • Code: T-318LR 18/3
CL703 (2002-2004)
  • Use: Long distance
  • Capacity 14,2 liter
  • Change 800000 km/ 36 months
  • Code: T-318LR 18/3
CL703 (2002-2004)
  • Use: Vocational
  • Capacity 14,2 liter
  • Change 64000 km/ 12 months/ 1200 hours
  • Code: T-318LR 18/3
CL703 (2002-2004)
  • Use: Vocational, extended
  • Capacity 14,2 liter
  • Change 128000 km/ 12 months/ 1200 hours
  • Code: T-318LR 18/3

Additional Notes

  • The Mack CL703 manual transmission holds 14.2 liters of fluid, a volume consistent with heavy-duty commercial truck transmissions designed to lubricate large gear sets under sustained load conditions.
  • Under normal use conditions, the fluid change interval is set at 400,000 km or 24 months, whichever comes first, reflecting a moderate-duty cycle where thermal and mechanical stress on the fluid accumulates at a predictable rate.
  • Long distance use conditions extend the change interval significantly, reaching 800,000 km or 36 months. Highway operation tends to produce more stable transmission temperatures and less frequent gear cycling, which slows fluid degradation compared to stop-and-go or load-intensive work.
  • Vocational use conditions carry an interval of 64,000 km, 12 months, or 1,200 hours, with an additional hour-based threshold that acknowledges high idle or power take-off operation where distance alone does not capture actual fluid stress.
  • The vocational extended condition doubles the distance threshold to 128,000 km while retaining the same 12-month and 1,200-hour limits as standard vocational use, indicating a distinction based on the nature of vocational work rather than a blanket reduction in service frequency.
  • The 14.2-liter capacity remains constant across all four use conditions on the CL703, meaning fluid volume is a fixed transmission characteristic and does not vary with operating environment or service interval classification.

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