Aprilia SX

Coolant capacity & service interval

Aprilia SX coolant capacity is 0,8 liter. Service intervals include checks at 1000 km, 4000 km, and 6000 km, with a change interval of 24 months. The data covers 4 configurations.

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

TypeSpecifications
SX 125 Euro 5 (2021- )
  • Use: Normal
  • Capacity 0,8 liter
  • Check 6000 km
  • Change 24 months
SX 125 Euro 4 (2017-2021)
  • Use: Normal
  • Capacity 0,8 liter
  • Check 6000 km
  • Change 24 months
SX 125 (2008-2017)
  • Use: Normal
  • Capacity 0,8 liter
  • Check 4000 km
  • Change 24 months
SX 125 (2008-2017)
  • Use: Initial service
  • Capacity 0,8 liter
  • Check 1000 km

Additional Notes

  • The Aprilia SX 125 cooling system holds 0.8 liter across all configurations covered in the specifications, from the original 2008-2017 variant through the Euro 4 and Euro 5 versions.
  • A 0.8 liter coolant capacity is a relatively modest figure, consistent with the small-displacement single-cylinder engine architecture typical of 125cc motorcycles in the SX class.
  • The SX 125 (2008-2017) includes an initial service interval requiring a coolant check at 1000 km, which is an early inspection point tied specifically to the break-in period rather than the standard maintenance cycle.
  • Under normal use, the SX 125 (2008-2017) specifies a coolant check every 4000 km, while the Euro 4 (2017-2021) and Euro 5 (2021- ) variants both extend that check interval to 6000 km.
  • The change interval for coolant is set at 24 months across all three configurations, meaning the replacement schedule is time-based rather than mileage-based regardless of the variant.
  • The shift from a 4000 km check interval on the pre-Euro 4 SX 125 to a 6000 km interval on the Euro 4 version reflects a difference in specified maintenance frequency between the two generations of the same 125cc platform.

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