Hyosung SF

Brake fluid capacity & service interval

Hyosung SF uses brake fluid with a capacity range between min and max. Service intervals include checks at 1000 km and 4000 km, with a change interval of 24 months. The data covers 6 configurations.

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

TypeSpecifications
SF 100 Rally (2005-2012)
  • Use: Normal
  • Between min and max.
  • Check 4000 km
  • Change 24 months
SF 100 Rally (2005-2012)
  • Use: Initial service
  • Between min and max.
  • Check 1000 km
SF 50 B Prima / Rush (2005-2012)
  • Use: Normal
  • Between min and max.
  • Check 4000 km
  • Change 24 months
SF 50 B Prima / Rush (2005-2012)
  • Use: Initial service
  • Between min and max.
  • Check 1000 km
SF 50 R Rally / Racing (2005-2012)
  • Use: Normal
  • Between min and max.
  • Check 4000 km
  • Change 24 months
SF 50 R Rally / Racing (2005-2012)
  • Use: Initial service
  • Between min and max.
  • Check 1000 km

Additional Notes

  • Across the Hyosung SF lineup covering the SF 100 Rally, SF 50 B Prima / Rush, and SF 50 R Rally / Racing, brake fluid level is specified as between the minimum and maximum marks on the reservoir, which is the standard operating range for hydraulic brake systems rather than a fixed volume fill quantity.
  • Under normal use conditions, all three variants share an identical brake fluid check interval of every 4000 km, indicating a uniform maintenance schedule across the SF range regardless of engine displacement or body style.
  • The change interval for brake fluid under normal use is set at 24 months for all three variants, a time-based interval rather than a mileage-based one, which reflects the hygroscopic nature of brake fluid and its tendency to absorb moisture over time regardless of distance traveled.
  • An initial service check interval of 1000 km applies to all three variants, which is considerably shorter than the 4000 km normal-use check interval and corresponds to the break-in period when hydraulic components are first settling into operation.
  • The initial service rows for all three variants specify only a fluid level check at 1000 km, with no fluid change interval listed for that stage, distinguishing the initial service scope from the ongoing normal use schedule.
  • The SF 50 B Prima / Rush and SF 50 R Rally / Racing share the same displacement class at 50 cc yet carry separate model designations, and both follow brake fluid specifications identical to the larger SF 100 Rally, pointing to a consistent hydraulic brake system design across the SF family.