Yamaha Snowmobiles Apex

Coolant capacity & service interval

Yamaha Apex coolant capacity ranges from 6 to 6,8 liters. Service intervals require checks every 2500 miles, 12 months, or 200 hours. The data covers 21 configurations.

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

TypeSpecifications
Apex LE (2016-2019)
  • Use: Normal
  • Capacity 6,2 liter
  • Check 2500 miles/ 12 months/ 200 hours
Apex XTX 1.75 (2016-2019)
  • Use: Normal
  • Capacity 6,3 liter
  • Check 2500 miles/ 12 months/ 200 hours
Apex (2011-2017)
  • Use: Normal
  • Capacity 6,2 liter
  • Check 2500 miles/ 12 months/ 200 hours
Apex SE (2011-2015)
  • Use: Normal
  • Capacity 6,2 liter
  • Check 2500 miles/ 12 months/ 200 hours
Apex XTX (2011-2017)
  • Use: Normal
  • Capacity 6,3 liter
  • Check 2500 miles/ 12 months/ 200 hours
Apex, RX10R (2009-2010)
  • Use: Normal
  • Capacity 6,2 liter
Apex GT, RX10GT (2009-2010)
  • Use: Normal
  • Capacity 6,2 liter
Apex LTX, RX10LT (2009-2010)
  • Use: Normal
  • Capacity 6,8 liter
Apex LTX GT, RX10LTGT (2009-2010)
  • Use: Normal
  • Capacity 6,8 liter
Apex MTX, RX10MT (2009-2010)
  • Use: Normal
  • Capacity 6,4 liter
Apex RTX, RX10RTR (2009-2010)
  • Use: Normal
  • Capacity 6,2 liter
Apex GT, RX10GT (2008-2009)
  • Use: Normal
  • Capacity 6 liter
Apex LTX, RX10GTA (2008-2009)
  • Use: Normal
  • Capacity 6 liter
Apex LTX GT, RX10LTGT (2008-2009)
  • Use: Normal
  • Capacity 6 liter
Apex MTX, RX10MT (2008-2009)
  • Use: Normal
  • Capacity 6,4 liter
Apex MTX SE, RX10MTA (2008-2009)
  • Use: Normal
  • Capacity 6,4 liter
Apex Mountain SE, RX10MS (2007-2008)
  • Use: Normal
  • Capacity 6,4 liter
Apex RTX, RX10RT (2007-2008)
  • Use: Normal
  • Capacity 6 liter
Apex, RX10R (2006-2008)
  • Use: Normal
  • Capacity 6 liter
Apex GT, RX10GT (2006-2007)
  • Use: Normal
  • Capacity 6 liter
Apex Mountain, RX10M (2006-2008)
  • Use: Normal
  • Capacity 6,4 liter

Additional Notes

  • Cooling system capacity across the Yamaha Snowmobiles Apex lineup falls into four distinct values depending on trim and model year: 6.0 liters, 6.2 liters, 6.3 liters, 6.4 liters, and 6.8 liters. These differences reflect variations in the cooling circuit volume tied to specific chassis and engine configurations rather than a single universal fill amount.
  • The 6.0-liter capacity appears on the Apex, RX10R (2006-2008), Apex GT/RX10GT (2006-2009), Apex RTX/RX10RT (2007-2008), Apex LTX GT/RX10LTGT (2008-2009), and Apex LTX/RX10GTA (2008-2009). This value represents the lower end of the capacity range within the lineup for those years.
  • Mountain and MTX variants consistently carry a 6.4-liter cooling system capacity. The Apex Mountain/RX10M (2006-2008), Apex Mountain SE/RX10MS (2007-2008), Apex MTX/RX10MT (2008-2010), and Apex MTX SE/RX10MTA (2008-2009) all share this figure, which is higher than the standard trail trims of the same era and reflects the additional thermal demands of deep-snow and mountain riding configurations.
  • The Apex LTX/RX10LT and Apex LTX GT/RX10LTGT both show a capacity increase from 6.0 liters in 2008-2009 to 6.8 liters in 2009-2010. At 6.8 liters, the LTX variants hold the largest cooling system volume in the entire Apex specification set, indicating a notably larger circuit in the updated long-track configuration.
  • A mid-range capacity of 6.2 liters applies to several configurations spanning 2009-2019, including the Apex/RX10R (2009-2010), Apex RTX/RX10RTR (2009-2010), Apex (2011-2017), Apex SE (2011-2015), and Apex LE (2016-2019). The consistency of this value across a wide span of years points to a stable cooling circuit design shared among standard and sport-touring trail trims.
  • The Apex XTX (2011-2017) and Apex XTX 1.75 (2016-2019) are specified at 6.3 liters, placing them slightly above the 6.2-liter standard trail trims. The XTX designation refers to a crossover configuration with a longer track, and the marginally higher capacity aligns with the slightly different chassis layout of that variant.
  • A check interval of every 2,500 miles, 12 months, or 200 hours, whichever comes first, is listed for all configurations that carry a service interval in the specifications. These are the Apex (2011-2017), Apex SE (2011-2015), Apex LE (2016-2019), Apex XTX (2011-2017), and Apex XTX 1.75 (2016-2019). All five are under normal use conditions.
  • The triple-threshold interval structure, combining a mileage limit, a calendar limit, and an hours limit, accounts for the varied ways snowmobiles accumulate wear. A machine used infrequently may reach the 12-month calendar threshold before the mileage or hours limits, while a heavily used sled may hit the 2,500-mile or 200-hour mark first.
  • Earlier configurations from 2006-2010, including the Apex GT/RX10GT, Apex Mountain, Apex MTX, and Apex RTX variants, carry no check interval in the specifications, only a capacity value. The 2011 model year marks the point at which interval data begins appearing in the listed specifications.

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