Grillo Mowers

Automatic transmission fluid capacity & service interval

Grillo Mowers use automatic transmission fluid with a capacity range of 6 to 20 liters. Service intervals include checks at 10 and 20 hours, and changes at 50, 200 hours/12 months, 500, and 1000 hours. The data covers 4 configurations.

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

TypeSpecifications
  • FD13.09 (2014- )
  • Hydrostatic
  • Use: Normal
  • Capacity 20 liter
  • Check 20 hours
  • Change 1000 hours
  • FD13.09 (2014- )
  • Hydrostatic
  • Use: First change only
  • Capacity 20 liter
  • Change 500 hours
  • FD450 (2012- )
  • Hydrostatic
  • Use: Normal
  • Capacity 6 liter
  • Check 10 hours
  • Change 200 hours/ 12 months
  • FD450 (2012- )
  • Hydrostatic
  • Use: First change only
  • Capacity 6 liter
  • Change 50 hours

Additional Notes

  • The Grillo Mowers FD13.09 hydrostatic transmission holds 20 liters of automatic transmission fluid, a notably large capacity that reflects the scale of the drivetrain in a commercial-grade mowing platform.
  • Under normal use conditions, the FD13.09 hydrostatic transmission fluid is checked every 20 hours and changed every 1,000 hours, placing the drain interval among the longer service cycles typical of heavy-duty hydrostatic systems.
  • The FD13.09 carries a first-change-only interval of 500 hours, which is half the standard 1,000-hour drain cycle. A first-change-only interval exists to flush break-in contaminants from new or rebuilt components before returning to the regular maintenance schedule.
  • The FD450, introduced from 2012, uses a 6-liter hydrostatic transmission fill, considerably smaller than the 20-liter capacity of the FD13.09, indicating a meaningfully different transmission size between the two models.
  • Normal-use service on the FD450 hydrostatic transmission calls for a fluid check every 10 hours, a notably frequent inspection interval that reflects the sensitivity of hydrostatic systems to fluid condition and level.
  • The FD450 normal-use change interval is set at 200 hours or 12 months, whichever comes first. The addition of a calendar-based limit means fluid age alone can trigger a service event even when operating hours remain low.
  • The FD450 first-change-only interval is 50 hours, compared to the 200-hour normal drain cycle. As with the FD13.09, the shortened initial interval is intended to remove metallic particles and residues generated during early operation of the hydrostatic unit.