BMC Megastar

Manual transmission fluid capacity & service interval

BMC Megastar manual transmission fluid capacity is 3 liters. Service intervals include checking every 10000 km or 6 months and changing every 60000 km or 12 months. The data covers 4 configurations.

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

TypeSpecifications
Megastar 290 (2005-2011)
  • Use: Normal
  • Capacity 3 liter
  • Check 10000 km/ 6 months
  • Change 60000 km/ 12 months
  • Code: BMC 15 5/1
Megastar 310 (2005-2011)
  • Use: Normal
  • Capacity 3 liter
  • Check 10000 km/ 6 months
  • Change 60000 km/ 12 months
  • Code: BMC 15 5/1
Megastar 360 (2005-2011)
  • Use: Normal
  • Capacity 3 liter
  • Check 10000 km/ 6 months
  • Change 60000 km/ 12 months
  • Code: ZF 6S-321 6/1
Megastar 400 (2005-2011)
  • Use: Normal
  • Capacity 3 liter
  • Check 10000 km/ 6 months
  • Change 60000 km/ 12 months
  • Code: ZF 6S-321 6/1

Additional Notes

  • All four BMC Megastar variants covered here — the 290, 310, 360, and 400 — share an identical manual transmission fluid capacity of 3 liters across the full 2005-2011 model range.
  • A 3-liter capacity is a moderate figure for a heavy commercial vehicle manual transmission, consistent with a service fill rather than a full overhaul fill, which typically requires additional fluid to account for residual volume in internal passages and cooler lines.
  • The fluid level check interval is set at every 10,000 km or 6 months under normal use conditions, whichever comes first. The dual trigger — distance and time — means low-mileage vehicles still require periodic inspection on a calendar basis.
  • The fluid change interval is 60,000 km or 12 months under normal use conditions. The time-based limit of 12 months means that even if a vehicle has not reached 60,000 km, a full fluid change is due annually.
  • The ratio between the check interval and the change interval is 6 to 1 by distance, meaning six fluid level checks are expected to occur between each full fluid change cycle.
  • The specifications apply uniformly across all four Megastar variants regardless of engine output designation — the 290, 310, 360, and 400 numerical designations, which typically refer to horsepower or engine displacement class in commercial trucks, do not produce any variation in transmission fluid capacity or service intervals here.

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