Ford F-Series Super Duty Class A Motorhome and Commercial Chassis (USA)

Coolant capacity & service interval

Ford F-Series Super Duty Class A Motorhome and Commercial Chassis (USA) coolant capacity is 29 liters. Service intervals include checks every 6 months, changes at 45000 miles or 36 months, and changes at 105000 miles or 72 months. The data covers 4 configurations.

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

TypeSpecifications
F-Series Super Duty Motorhome / Chassis (2019- )
  • Use: Normal
  • Capacity 29 liter
  • Check 6 months
  • Change 45000 miles/ 36 months
F-Series Super Duty Motorhome / Chassis (2019- )
  • Use: First change only
  • Capacity 29 liter
  • Check 6 months
  • Change 105000 miles/ 72 months
F-Series Super Duty Motorhome / Chassis (2018-2020)
  • Use: Normal
  • Capacity 29 liter
  • Check 6 months
  • Change 45000 miles/ 36 months
F-Series Super Duty Motorhome / Chassis (2018-2020)
  • Use: First change only
  • Capacity 29 liter
  • Check 6 months
  • Change 105000 miles/ 72 months

Additional Notes

  • The Ford F-Series Super Duty Class A Motorhome and Commercial Chassis carries a cooling system capacity of 29 liters, a figure consistent across both the 2018-2020 and 2019- configurations in the specifications.
  • A 29-liter coolant capacity is notably large relative to passenger vehicles, reflecting the demands of a heavy-duty chassis designed to support motorhome and commercial body applications.
  • Under normal use conditions, the coolant change interval is set at 45,000 miles or 36 months, whichever comes first, for the 2018-2020 configuration.
  • The first change only condition extends the initial coolant change interval significantly, to 105,000 miles or 72 months, for the 2018-2020 configuration. A first-change-only interval typically applies to factory-fill coolant formulations engineered to last longer before the first service, after which standard intervals apply.
  • The 2019- configuration carries the same normal-use change interval of 45,000 miles or 36 months and the same first-change-only interval of 105,000 miles or 72 months as the 2018-2020 specification, with an identical 29-liter capacity.
  • Regardless of use condition or model year range, the coolant check interval remains at every 6 months across all four rows in the specifications, indicating a consistent inspection cadence independent of the change schedule in effect.

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