Fendt 300 Vario COM3

Coolant capacity & service interval

Fendt 300 Vario COM3 requires coolant with a capacity of 20 liters. Service intervals include checks every 10 hours and changes every 2000 hours or 24 months. The data covers 4 configurations.

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

TypeSpecifications
309 Vario (2007-2011)
  • Use: Normal
  • Capacity 20 liter
  • Check 10 hours
  • Change 2000 hours/ 24 months
310 Vario (2007-2011)
  • Use: Normal
  • Capacity 20 liter
  • Check 10 hours
  • Change 2000 hours/ 24 months
311 Vario (2007-2011)
  • Use: Normal
  • Capacity 20 liter
  • Check 10 hours
  • Change 2000 hours/ 24 months
312 Vario (2007-2011)
  • Use: Normal
  • Capacity 20 liter
  • Check 10 hours
  • Change 2000 hours/ 24 months

Additional Notes

  • The Fendt 300 Vario COM3 cooling system holds 20 liters across the 309, 310, 311, and 312 Vario variants, a capacity typical of agricultural tractor cooling circuits where the engine block, radiator, and associated hoses together account for a substantial total volume.
  • All four variants share an identical 20-liter cooling system capacity, meaning no variation exists between the 309 and 312 Vario models in the 2007-2011 production range for this specification.
  • The coolant check interval is set at 10 hours of operation, which in agricultural tractor service represents a very frequent inspection point, consistent with the demanding thermal loads placed on cooling systems during heavy field work.
  • The coolant change interval is specified at 2000 hours or 24 months, whichever comes first. The dual-trigger structure means calendar time alone can mandate a change even when the hour threshold has not been reached, which is relevant for machines used seasonally at lower annual hours.
  • A 2000-hour change interval for coolant is a moderately long service cycle in tractor applications, reflecting the use of extended-life or heavy-duty coolant formulations that maintain corrosion inhibitor effectiveness over prolonged periods.
  • The 24-month calendar limit on coolant changes applies uniformly across the 309 Vario, 310 Vario, 311 Vario, and 312 Vario, regardless of engine displacement differences between the variants.

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