The Case IH DX33 tractor cooling system capacity is 7.3 gal | 27.6 L, coolant type is extended-life OAT coolant, and coolant change interval is every 6,000 hours or 6 years.
Case IH DX33 Coolant Capacity Details
Cooling system capacity
7.3 gal | 27.6 L
Coolant type
Extended-life OAT coolant
Coolant change interval
Every 6,000 hours or 6 years
Radiator cap pressure
13 psi | 90 kPa
Coolant Capacity Comparison Chart
Coolant Capacity Comparison
This model
7.3 gal
Average
2.8 gal
Low
1.5 gal
High
5 gal
Benchmarks use practical low, average and high coolant-capacity ranges for the compact tractor category. Use the exact tractor manual before buying coolant.
Case IH DX33 Extra Coolant Notes
Engine horsepower
33 hp | 24.6 kW
Engine displacement
1.5 L | 91.5 cu in
Capacity note
For the Case IH DX33, the listed cooling system capacity is 7.3 gal | 27.6 L. Buy slightly more coolant than the exact capacity so you have enough for topping off after air burps out.
Mixture note
Use the coolant type listed above and match the antifreeze/water mix to the operator manual and local freezing conditions.
Radiator cap note
The radiator cap pressure listed for the Case IH DX33 is 13 psi | 90 kPa. Do not replace it with a random cap unless the pressure rating matches.
Refill note
Refill slowly, run the tractor until warm with the heater circuit open if fitted, let it cool, then recheck the coolant level. Never remove a hot radiator cap under pressure.
Case IH DX33 Coolant FAQs
How much coolant does a Case IH DX33 take?
The Case IH DX33 takes 7.3 gal | 27.6 L of coolant. That is well above the normal compact tractor benchmark shown here, so treat it as a full cooling-system service job, not a quick top-up.
Is 7.3 gal | 27.6 L a lot of coolant for a Case IH DX33?
Yes. For this tractor category, 7.3 gal | 27.6 L is well above normal. This is the sort of refill where you want all coolant on hand before draining, because stopping halfway through the job is annoying and messy.
How many coolant jugs do I need for a Case IH DX33?
This is more than a small top-off job. A 7.3 gal | 27.6 L system needs about 8 one-gallon containers if you are using premixed coolant. If using concentrate at a 50/50 mix, plan on about 3.6 gal of concentrate and 3.6 gal of distilled water. In metric terms, that is roughly 6 x 5 L containers for a full premix refill.
Can I mix coolant types in a Case IH DX33?
Because the listed coolant is extended-life OAT coolant, the clean move is to stay with the same approved chemistry. Do not casually mix it with old green conventional coolant; if the old coolant type is unknown, flush first or confirm what is already in the system.
Can I use a different radiator cap on a Case IH DX33?
The listed cap pressure is 13 psi | 90 kPa. That higher-pressure cap helps raise the boiling point, but only if the radiator neck, hoses and overflow path are in good shape. A weak cap or damaged seat can still cause coolant loss.
When should the Case IH DX33 coolant be changed?
Use whichever limit comes first for the Case IH DX33: every 6,000 hours or 6 years. Low-hour tractors can still age out on time, because corrosion protection gets weaker even when the coolant still looks clean.
Official information note
Mistakes do happen. Coolant specs can change by year, engine, market, radiator option and coolant chemistry. Check the operator manual, parts book and official caseih.com website before draining, flushing or refilling the cooling system.
