The Cub Cadet RZT S50 coolant capacity is listed as 0.63 gal (2.4 L). It also lists coolant type ethylene glycol-based coolant and antifreeze mix 50/50 coolant and water mix.
Coolant capacity0.63 gal (2.4 L)
Coolant typeethylene glycol-based coolant
Antifreeze mix50/50 coolant and water mix
Cub Cadet RZT S50 Coolant Capacity
Coolant capacity
0.63 gal (2.4 L)
Cooling system capacity
0.63 gal (2.4 L)
Radiator capacity
0.63 gal (2.4 L)
Coolant type
ethylene glycol-based coolant
Antifreeze mix
50/50 coolant and water mix
Engine horsepower
25 hp (18.6 kW)
Engine displacement
0.7 L (44.2 cu in)
Coolant Capacity Comparison Chart
Coolant capacity comparison
This model
0.63 gal
Average
1 gal
Low
0.5 gal
High
2 gal
Engine horsepower comparison
This model
25 hp
Average
35 hp
Low
20 hp
High
60 hp
Engine displacement comparison
This model
0.7 L
Average
0.9 L
Low
0.5 L
High
1.5 L
Cub Cadet RZT S50 Coolant and Engine Notes
Coolant capacity note
The headline cooling-system number for the Cub Cadet RZT S50 is 0.63 gal (2.4 L). Buy enough coolant before opening the drain plug
Radiator capacity note
For the Cub Cadet RZT S50, the captured radiator capacity is 0.63 gal (2.4 L). If you are doing a full drain, check the full cooling-system capacity too
Coolant type note
For the Cub Cadet RZT S50, coolant type matters as much as capacity. The clean captured value is ethylene glycol-based coolant
Antifreeze mix note
For the Cub Cadet RZT S50, the captured mix is 50/50 coolant and water mix. Straight water is not the right long-term answer unless you are only flushing the system
Engine context note
Engine context for the Cub Cadet RZT S50: engine horsepower 25 hp (18.6 kW) and displacement 0.7 L (44.2 cu in). Engine size helps explain why coolant capacity changes between models
Refill note
The practical service move for the Cub Cadet RZT S50: buy enough coolant for 0.63 gal (2.4 L), fill to spec, run the engine, then recheck the radiator and overflow bottle after cooling
Cub Cadet RZT S50 Coolant Capacity FAQ
What is the Cub Cadet RZT S50 coolant capacity?
The Cub Cadet RZT S50 coolant capacity is listed as 0.63 gal (2.4 L) for coolant capacity. Use this as the refill planning number and confirm the final level at the radiator or overflow bottle.
Can I use any coolant in the Cub Cadet RZT S50?
No. Use ethylene glycol-based coolant or a coolant that clearly matches the manual’s required spec. Wrong coolant can create corrosion, deposits or seal problems.
Is premixed coolant okay for the Cub Cadet RZT S50?
Premixed coolant can be fine if it matches ethylene glycol-based coolant and the required mix. The captured mix for the Cub Cadet RZT S50 is 50/50 coolant and water mix.
How often should I change coolant in the Cub Cadet RZT S50?
The captured coolant change interval for the Cub Cadet RZT S50 is the service interval in the operator manual. If service history is unknown, changing it is usually smarter than guessing.
Why does the Cub Cadet RZT S50 coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Cub Cadet RZT S50, the supporting engine data is horsepower 25 hp (18.6 kW) and displacement 0.7 L (44.2 cu in).
Official information note
Mistakes do happen. Tractor coolant specs can change by year, market, engine, radiator, cab/heater setup and service procedure. Please check the operator manual, decal information and official cubcadet.com website for official information before draining or refilling the cooling system.
