MBK Nitro

Coolant capacity & service interval

MBK Nitro coolant capacity ranges from 0,25 to 1,2 liters. Service intervals include checks at 3000 km or 6 months, and changes at 12000 km or 24 months, or 36 months. The data covers 6 configurations.

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

TypeSpecifications
Nitro 50 4T (2014-2017)
  • Use: Normal
  • Capacity 0,26 liter (Reservoir)
  • Capacity 0,78 liter (Total)
  • Change 36 months
Nitro 50 (2012-2017)
  • Use: Normal
  • Capacity 0,25 liter (Reservoir)
  • Capacity 1,2 liter (Total)
  • Check 3000 km/ 6 months
  • Change 12000 km/ 24 months
Nitro 50 (2008-2011)
  • Use: Normal
  • Capacity 0,25 liter (Reservoir)
  • Capacity 1,2 liter (Total)
  • Check 3000 km/ 6 months
  • Change 12000 km/ 24 months
Nitro 50 (2005-2007)
  • Use: Normal
  • Capacity 0,25 liter (Reservoir)
  • Capacity 1,2 liter (Total)
  • Check 3000 km/ 6 months
  • Change 12000 km/ 24 months
Nitro 50 (2003-2003)
  • Use: Normal
  • Capacity 0,25 liter (Reservoir)
  • Capacity 1,2 liter (Total)
  • Check 3000 km/ 6 months
  • Change 12000 km/ 24 months
Nitro 50 (1997-1997)
  • Use: Normal
  • Capacity 0,25 liter (Reservoir)
  • Capacity 1,2 liter (Total)
  • Check 3000 km/ 6 months
  • Change 12000 km/ 24 months

Additional Notes

  • The MBK Nitro 50 carries a total cooling system capacity of 1.2 liters, while the reservoir alone holds 0.25 liters. The gap between these two figures reflects the volume distributed across the engine passages, radiator, and hoses beyond what the reservoir retains.
  • The Nitro 50 4T shares the same reservoir-plus-total structure but at notably different volumes: 0.26 liters for the reservoir and 0.78 liters total. The smaller total capacity aligns with the more compact cooling circuit typical of four-stroke 50cc engines compared to their two-stroke counterparts.
  • Across the Nitro 50 variants spanning 1997-2017, the coolant check interval under normal use is set at 3,000 km or 6 months, whichever comes first. The dual-trigger format accounts for both high-mileage and low-mileage usage patterns within the same service schedule.
  • The Nitro 50 coolant change interval under normal use is 12,000 km or 24 months. A time-based ceiling of 24 months means the coolant is renewed regardless of whether the distance threshold has been reached, which reflects the degradation of corrosion inhibitors over time.
  • The Nitro 50 4T (2014-2017) specifies a coolant change interval expressed purely in time: 36 months. No distance figure accompanies the change interval for this variant, in contrast to the km/month dual-format used across all other Nitro 50 entries.
  • The Nitro 50 4T change interval of 36 months is 12 months longer than the 24-month interval applied to the standard Nitro 50. This difference may reflect the distinct coolant formulation or system design associated with the four-stroke engine configuration.
  • The total capacity of 1.2 liters on the Nitro 50 (1997-2017) remains consistent across all model year groups from 1997 through 2017, including the 1997, 2003, 2005-2007, 2008-2011, and 2012-2017 entries. No variation in capacity figures appears across any of those groups.