Zetor Utilix

Coolant capacity & service interval

Zetor Utilix coolant capacity is 8,5 liters. The service interval for coolant is 24 months. The data covers 6 configurations.

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

Type	Specifications
Utilix CL 45, Perkins 404D-22	Use: Normal Capacity 8,5 liter Change 24 months
Utilix CL 45NC, Perkins 404D-22	Use: Normal Capacity 8,5 liter Change 24 months
Utilix CL 55, Perkins 404D-22	Use: Normal Capacity 8,5 liter Change 24 months
Utilix CL 55NC, Perkins 404D-22	Use: Normal Capacity 8,5 liter Change 24 months
Utilix HT 45, Perkins 404D-22	Use: Normal Capacity 8,5 liter Change 24 months
Utilix HT 55, Perkins 404D-22	Use: Normal Capacity 8,5 liter Change 24 months

All six Zetor Utilix variants listed here share an identical cooling system capacity of 8.5 liters, reflecting the uniform use of the Perkins 404D-22 engine across the CL 45, CL 45NC, CL 55, CL 55NC, HT 45, and HT 55 configurations.
The 8.5-liter figure represents the total cooling system fill volume, which typically encompasses the engine block, cylinder head passages, radiator, and expansion reservoir rather than the engine block alone.
A 24-month coolant change interval applies uniformly across all six variants under normal use conditions, meaning standard operating environments without the added thermal or contamination stress associated with severe-duty cycles.
The NC designation on the CL 45NC and CL 55NC variants does not produce any difference in cooling system capacity or change interval relative to their non-NC counterparts, both pairs sharing the 8.5-liter capacity and 24-month schedule.
The HT 45 and HT 55 variants, despite carrying a different body or configuration designation from the CL series, retain the same Perkins 404D-22 engine specifications and therefore the same 8.5-liter cooling system capacity and 24-month service interval.