Jeep MB / GPW

Brake fluid capacity & service interval

Jeep MB / GPW requires 0,24 liter of brake fluid. Service intervals include checking at 1600 km and changing at 20000 km. The data covers 2 configurations.

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

TypeSpecifications
Ford Model GPW (1941-1945)
  • Use: Normal
  • Capacity 0,24 liter
  • Check 1600 km
  • Change 20000 km
Willys- Overland model MB (1941-1945)
  • Use: Normal
  • Capacity 0,24 liter
  • Check 1600 km
  • Change 20000 km

Additional Notes

  • Both the Ford Model GPW and the Willys-Overland Model MB share an identical brake fluid capacity of 0.24 liter, which reflects the small reservoir volume typical of a basic hydraulic brake system in a lightweight military vehicle.
  • The 0.24 liter figure represents a service fill capacity, meaning the amount of fluid the hydraulic brake system holds during normal operation rather than a full overhaul quantity.
  • Under normal use conditions, the brake fluid check interval is set at 1,600 km, a relatively short distance that reflects the sensitivity of hydraulic brake fluid to moisture absorption and contamination over time.
  • The change interval for brake fluid on both the Jeep MB / GPW models is specified at 20,000 km under normal use conditions, which represents the full replacement cycle for the hydraulic system fluid.
  • The ratio between the check interval of 1,600 km and the change interval of 20,000 km means the fluid level and condition would be inspected approximately 12 times before a full fluid change is due.
  • The specifications for the Ford Model GPW and the Willys-Overland Model MB are identical across capacity, check interval, and change interval, indicating no differentiation in brake system servicing between the two manufacturers for the 1941-1945 production years.

Other Systems