The New Holland TG305 tractor cooling system capacity is 15 gal | 56.8 L, coolant type is ethylene glycol-based coolant, and coolant change interval is every 1,500 hours or 3 years.
New Holland TG305 Coolant Capacity Details
Cooling system capacity
15 gal | 56.8 L
Coolant type
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
A 7-PSI radiator cap is specified for certain Ford New Holland tractors including models 2000, 3000, 4000, 5000, 7000, and 8, which aligns with the New Holland
Coolant Capacity Comparison Chart
Coolant Capacity Comparison
This model
15 gal
Average
16 gal
Low
10 gal
High
28 gal
Benchmarks use practical low, average and high coolant-capacity ranges for the large ag tractor category. Use the exact tractor manual before buying coolant.
New Holland TG305 Extra Coolant Notes
Engine horsepower
304 hp | 226.7 kW
Engine displacement
8.3 L | 505 cu in
Capacity note
For the New Holland TG305, 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 TG305 is A 7-PSI radiator cap is specified for certain Ford New Holland tractors including models 2000, 3000, 4000, 5000, 7000, and 8, which aligns with the New Holland. 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 TG305 Coolant FAQs
How much coolant does a New Holland TG305 take?
The New Holland TG305 takes 15 gal | 56.8 L of coolant. That is about normal for the large ag tractor benchmark shown here, so plan it like a standard drain-and-refill rather than a tiny top-up.
Is the New Holland TG305 coolant capacity normal?
Yes, 15 gal | 56.8 L lands about where you would expect for this tractor category. The main thing is buying enough for a complete refill plus a small top-off amount.
How many coolant jugs do I need for a New Holland TG305?
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 TG305?
The listed coolant is 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 TG305 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 TG305?
The listed cap pressure is A 7-PSI radiator cap is specified for certain Ford New Holland tractors including models 2000, 3000, 4000, 5000, 7000, and 8, which aligns with the New Holland. 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.
