Solis/Sonalika (ITL) Tractors Solis

Coolant capacity & service interval

Solis/Sonalika (ITL) Tractors Solis coolant capacity ranges from 2,5 to 10,5 liters. Service intervals include 10 hours, 24 months, 750 hours, 1500 hours, and 12 months/1500 hours. The data covers 9 configurations.

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

TypeSpecifications
20, Mitsubishi L3E
  • Use: Normal
  • Capacity 2,5 liter
  • Check 10 hours
  • Change 24 months
26, Mitsubishi S3L2
  • Use: Normal
  • Capacity 2,5 liter
  • Check 10 hours
  • Change 24 months
50, ITL 3102 EL (Stage IIIa)
  • Use: Normal
  • Capacity 10,5 liter
  • Check 10 hours
  • Change 750 hours
60, ITL 4100 FL
  • Use: Normal
  • Capacity 10,5 liter
  • Check 10 hours
  • Change 1500 hours
60N, ITL 4100 FL
  • Use: Normal
  • Capacity 10,5 liter
  • Check 10 hours
  • Change 1500 hours
75, ITL 4100 ELT
  • Use: Normal
  • Capacity 10,5 liter
  • Check 10 hours
  • Change 1500 hours
75N, ITL 4100 ELT
  • Use: Normal
  • Capacity 10,5 liter
  • Check 10 hours
  • Change 1500 hours
90 CRDI, ITL 4105CTI
  • Use: Normal
  • Capacity 10,5 liter
  • Check 10 hours
  • Change 12 months/ 1500 hours
90N CRDI, ITL 4105CTI
  • Use: Normal
  • Capacity 10,5 liter
  • Check 10 hours
  • Change 12 months/ 1500 hours

Additional Notes

  • The Solis 20 and Solis 26 share a 2.5-liter cooling system capacity, a figure consistent with the compact displacement of their respective three-cylinder Mitsubishi engines, the L3E and S3L2. A 2.5-liter fill is typical for small-bore liquid-cooled engines in the sub-30 horsepower tractor class.
  • All ITL-engined models in the Solis range — the 50, 60, 60N, 75, 75N, 90 CRDI, and 90N CRDI — share a 10.5-liter cooling system capacity, reflecting the larger block size of the four-cylinder ITL engine family compared to the Mitsubishi units used in smaller models.
  • The Solis 20 and Solis 26 use a calendar-based coolant change interval of 24 months under normal use conditions. A time-based interval rather than an hours-based one is common for low-utilization equipment where annual operating hours may be too few to trigger a mileage or hours threshold within a reasonable period.
  • The Solis 50 with the ITL 3102 EL (Stage IIIa) engine carries a coolant change interval of 750 hours under normal use conditions, which is notably shorter than the 1,500-hour interval specified for the larger ITL four-cylinder models. Stage IIIa emissions certification relates to European non-road mobile machinery regulations and can influence cooling system thermal demands.
  • The Solis 60, 60N, 75, and 75N all share a 1,500-hour coolant change interval under normal use conditions, paired with the same 10.5-liter capacity. The 60 and 60N use the ITL 4100 FL engine, while the 75 and 75N use the ITL 4100 ELT, yet the cooling service interval remains identical across both engine variants.
  • The Solis 90 CRDI and 90N CRDI, both fitted with the ITL 4105CTI engine, carry a dual-condition change interval of 12 months or 1,500 hours, whichever comes first under normal use conditions. The addition of a calendar limit alongside an hours-based threshold is characteristic of CRDI (Common Rail Direct Injection) engines, where coolant chemistry degradation can occur over time independent of operating hours.
  • All models across the Solis range specify a coolant check interval of 10 hours under normal use conditions. A 10-hour check interval is associated with initial operation periods and routine pre-shift inspections, allowing early detection of leaks or low levels before significant engine damage can occur.

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