The New Holland T5.90 tractor cooling system capacity is 15 gal | 56.8 L, coolant type is 50/50 ethylene glycol-based coolant, and coolant change interval is every 1,500 hours or 3 years.
New Holland T5.90 Coolant Capacity Details
Cooling system capacity
15 gal | 56.8 L
Coolant type
50/50 ethylene glycol-based coolant
Coolant change interval
Every 1,500 hours or 3 years
Coolant mixture ratio
50/50 antifreeze and water
Radiator cap pressure
10 psi | 70 kPa
Coolant Capacity Comparison Chart
Coolant Capacity Comparison
This model
15 gal
Average
5.5 gal
Low
3 gal
High
9 gal
Benchmarks use practical low, average and high coolant-capacity ranges for the utility tractor category. Use the exact tractor manual before buying coolant.
New Holland T5.90 Extra Coolant Notes
Engine horsepower
88 hp | 66 kW
Engine displacement
3.4 L | 207 cu in
Capacity note
For the New Holland T5.90, the listed cooling system capacity is 15 gal | 56.8 L. Buy slightly more coolant than the exact capacity so you have enough for topping off after air burps out.
Mixture note
50/50 antifreeze and water.
Radiator cap note
The radiator cap pressure listed for the New Holland T5.90 is 10 psi | 70 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.
New Holland T5.90 Coolant FAQs
How much coolant does a New Holland T5.90 take?
The New Holland T5.90 takes 15 gal | 56.8 L of coolant. That is well above the normal utility tractor benchmark shown here, so treat it as a full cooling-system service job, not a quick top-up.
Is 15 gal | 56.8 L a lot of coolant for a New Holland T5.90?
Yes. For this tractor category, 15 gal | 56.8 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 New Holland T5.90?
Do not underestimate this refill. A 15 gal | 56.8 L system needs about 15 one-gallon containers if you are using premixed coolant. If using concentrate at a 50/50 mix, plan on about 7.5 gal of concentrate and 7.5 gal of distilled water. In metric terms, that is roughly 12 x 5 L containers for a full premix refill.
What coolant should I use in a New Holland T5.90?
The listed coolant is 50/50 ethylene glycol-based coolant. Ethylene glycol tells you the base coolant, but the additive package still matters on diesel engines, so match the manual or an approved equivalent. The listed mix is 50/50 antifreeze and water, so do not run straight water except as a short emergency move.
How much concentrate and water does a New Holland T5.90 need?
With the listed 50/50 antifreeze and water mix, a full 15 gal | 56.8 L refill works out to about 7.5 gal of antifreeze concentrate and 7.5 gal of distilled water. If using premix, do not add extra water unless the product label says to.
Can I use a different radiator cap on a New Holland T5.90?
The listed cap pressure is 10 psi | 70 kPa. Use the same pressure rating when replacing it. The cap is part of the cooling system, not just a lid, and the wrong rating can cause boil-over, leaks or pressure problems.
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 newholland.com website before draining, flushing or refilling the cooling system.
