MCI Coaches

Differential fluid capacity & service interval

MCI Coaches require differential fluid with a capacity of 18,9 liters. Service intervals include changes at 2000 miles or 96000 miles/3000 hours. The data covers 2 configurations.

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

TypeSpecifications
  • D4500, DD60 (2002-2009)
  • Rear
  • Use: Normal
  • Capacity 18,9 liter
  • Change 96000 miles/ 3000 hours
  • D4500, DD60 (2002-2009)
  • Rear
  • Use: Initial service
  • Capacity 18,9 liter
  • Change 2000 miles

Additional Notes

  • The rear differential on the MCI Coaches D4500 and DD60 holds 18.9 liters, a capacity consistent with heavy-duty drive axles found in large commercial coaches where substantial fluid volume is needed to maintain adequate lubrication across wide operating temperature ranges.
  • Under normal use conditions, the rear differential fluid change interval is set at 96,000 miles or 3,000 hours, whichever comes first, giving operators a dual threshold that accounts for both distance-based and time-based service cycles.
  • An initial service interval of 2,000 miles applies to the rear differential, reflecting the standard break-in practice for heavy axle components where metal-to-metal contact during early operation introduces fine particles into the fluid that warrant an early drain and refill.
  • The 18.9-liter capacity remains consistent across both the normal use and initial service entries for the D4500 and DD60 configurations spanning 2002-2009, indicating no fill volume difference between a break-in service and a standard interval change.

Other Systems