Backhoe Loader Oil and Fluid Capacities in India: A Service Reference

How much oil does a backhoe loader take?

Backhoe loader oil capacity is the amount of engine oil, hydraulic oil, transmission oil and coolant a machine holds when every system is filled to its correct level. A backhoe loader is the yellow digger-cum-loader you see on almost every Indian site, with a loading bucket at the front and a digging arm at the back. Across the 51 backhoe loaders listed on DesiMachines, a machine holds roughly 8 to 15 litres of engine oil, 14 to 22 litres of transmission oil, 10 to 20.5 litres of coolant and 60 to 160 litres of diesel. Hydraulic oil is the big one, and it is quoted two different ways: the tank alone holds 42 to 135 litres, while the full system holds 42 to 125 litres.

Those are not numbers to guess at. Buy too little oil and you finish a service with the machine half-filled. Buy too much and a drum sits open in the shed collecting dust and water. This page lists what each machine on our books actually holds, taken from the specification sheet on its own product page, so you can work out what to carry before the service starts.

One thing to be clear about from the start: your operator’s manual is the final authority for your machine. Capacities change between variants, and a 2WD and a 4WD of the same model do not always take the same amount. Use these figures to plan and to compare machines, then confirm against the manual before you drain anything.

Backhoe loader oil and fluid capacities by model

The table below is a straight read from the specification sheets of machines listed on DesiMachines. A dash means that machine does not publish that figure.

Coverage across the full list: 49 of the 51 machines publish an engine oil figure, 49 publish transmission oil, 50 publish a fuel tank size, 43 publish coolant, and 33 publish a hydraulic tank figure against 32 that publish a full hydraulic system figure.

Browse all backhoe loaders on DesiMachines to open any machine’s own specification sheet and check its exact capacities before you order oil.

How much engine oil does a backhoe loader need?

A backhoe loader in India holds between 8 and 15 litres of engine oil, sump and filter together. The JCB 2DX sits at the bottom of that range with 8 litres. The JCB 3DX family sits at the top with 15 litres.

Most machines land in the middle. The most common single figure on our books is 11.5 litres, shared by nine machines, with 13.7 litres on another six. If you are buying oil for a service without the manual in front of you, a 15 litre drum covers almost every backhoe loader sold here, with a little left over for topping up.

The filter matters more than people expect. The figures above are for an oil change with the filter changed too. Drain the sump only and leave the old filter on, and you will need less oil, and you will also leave a filter full of dirty oil sitting in the system. Change both together.

Hydraulic tank or hydraulic system: which number do you buy oil for?

These are two different figures and mixing them up is the most common mistake on a backhoe service. The hydraulic tank is the reservoir, the box that holds the spare oil. The hydraulic system figure covers the whole circuit: the tank plus the oil sitting in the pipes, the pump and the rams that push the boom and bucket.

Sixteen machines on our books publish both numbers, and on every one of the sixteen the system figure is equal to or larger than the tank figure. The CASE 770 EX shows the gap clearly: an 80 litre tank against a 107 litre system. The Mahindra SX IV shows it wider still, 50 litres in the tank against 100 litres in the system.

The practical rule that follows:

• Topping up after a hose change or a small leak — you are filling the tank, so the tank figure is your guide.
• A full oil change where the system is drained — you need close to the system figure, because you are refilling the pipes and rams as well.

Across the machines that publish it, the hydraulic tank runs from 42 litres to 135 litres, and the full system from 42 litres to 125 litres. The bulk of the class sits between 80 and 120 litres. The CAT 424 sits lowest at 42 litres for both, well under the rest of the class, so confirm that one against the manual before ordering. At the other end the ACE AX 130 holds 135 litres in the tank alone.

For how often that oil should come out and what to watch for in between, read our guide to hydraulic system maintenance.

Does a 4WD backhoe loader take more transmission oil than a 2WD?

Yes. On the machines that publish both figures, the four-wheel-drive version holds more transmission oil than the two-wheel-drive version of the same model. Transmission oil is the oil in the gearbox and the drive line, not the engine.

Three machines on our books state it plainly:

• Mahindra Earthmaster VX and SX — 19.2 litres in 2WD, 22 litres in 4WD.
• CASE 851 NX — 18 litres in 2WD, 20 litres in 4WD.
• CASE 770 NX Magnum — 18 litres in 2WD, 20 litres in 4WD.

The reason is simple. A 4WD machine drives the front axle as well as the rear, so there is a front differential and a transfer arrangement holding oil that a 2WD machine does not have. Two to three extra litres is the usual difference.

This is worth knowing at service time and at buying time. If you are still deciding between the two, our guide on 2WD vs 4WD backhoe loaders goes through where the extra drive earns its money in Indian conditions and where it does not.

Across the whole class, transmission oil runs from 14 litres on the CAT 424 up to 22 litres on a 4WD Mahindra Earthmaster.

How much coolant and diesel does a backhoe loader hold?

Coolant is the water-and-additive mix in the radiator that carries heat away from the engine. Backhoe loaders on our books hold 10 to 20.5 litres of it. The most common figure by far is 17 litres, which fourteen of the machines share. The JCB 3DX Plus, Super, Xtra and the 4DX sit at the top with 20.5 litres.

Diesel tanks run from 60 litres to 160 litres. The 60 litre tank belongs to the JCB 2DX, the smallest machine on the list. At the other end the CAT 424 and the ACE AX 130 carry 160 litres. Most machines cluster around 115 to 150 litres, and two sizes tie as the most common: 115 litres and 128 litres, on nine machines each.

Tank size only tells you half the story. What matters on site is how long that tank lasts, which depends on the work you are doing and how the machine is driven. Our guide to backhoe loader mileage and fuel consumption covers what these machines actually burn in an hour of digging against an hour of loading.

Why a bigger engine does not always mean more oil

Buyers often assume the more powerful machine takes more of everything. The specification sheets say otherwise, and the difference is large enough to be worth planning around.

The JCB 3DX is a 49 HP machine and it holds 15 litres of engine oil, the most in the class. The Bull HD100 4WD is a 100 HP machine and it holds 10 litres. The Bull Grandia, also 100 HP, holds 13 litres. So the machine with twice the power takes a third less oil.

Engine oil capacity follows the engine design, the sump shape and the service interval the maker has set, not the power rating on the brochure. The same holds for the hydraulic side: the CAT 424 and the JCB 3DX Super are both 74 HP machines, and one publishes a 42 litre hydraulic figure against the other’s 92 litres.

The lesson for a buyer is to read the capacity line for the exact machine rather than reasoning from its horsepower. Our guide to backhoe loader engine power and torque explains what the HP figure does and does not tell you.

How to use these numbers when you service or buy

Three practical uses for this page.

Planning a service. Add up what the job needs before the mechanic arrives, so nothing is bought twice. Among the 74 HP machines on our books, engine oil with the filter runs anywhere from 8.5 litres on a CASE 770 NX to 15 litres on a JCB 3DX Super, so check the model rather than the class, and budget close to 100 litres for a full hydraulic change. Our backhoe loader maintenance schedule sets out what falls due at the daily, 250 hour and 500 hour marks.

Working out running cost. Oil is a real line in the yearly bill, and it is one you can predict. A machine holding 100 litres of hydraulic oil against one holding 60 litres costs meaningfully more every time that oil is changed, even though the two machines may do the same work.

Checking a used machine. Ask what the last hydraulic change took. An owner who has genuinely serviced the machine will know roughly how many litres went in, and the answer should sit near the figure on the specification sheet. A vague answer, or one far off the published capacity, tells you something about how the machine has been looked after.

For the rest of the specification picture, see our guides to backhoe loader dimensions and site access, bucket capacity, dig depth and dump height and top speed, gears and road travel.

Backhoe loader capacities, in short

• Engine oil: 8 to 15 litres. A 15 litre drum covers nearly every machine.
• Hydraulic tank: 42 to 135 litres. Hydraulic system: 42 to 125 litres. Use the system figure for a full change.
• Transmission oil: 14 to 22 litres. A 4WD takes two to three litres more than the same model in 2WD.
• Coolant: 10 to 20.5 litres, most commonly 17 litres.
• Diesel tank: 60 to 160 litres, most commonly 115 or 128 litres.

The same capacity reference exists for other machine families: wheel loaders, hydra cranes and motor graders. To start from the machine itself, read what a backhoe loader is and what it does, or return to the backhoe loader guide.

Ready to compare machines on specification rather than on the salesman’s word? See every backhoe loader listed on DesiMachines, open the specification tab on any model, and check its capacities against the table above.

All capacity figures on this page are taken from the specification sheets published on DesiMachines product pages and were checked in September 2026. Prices, specifications and features are indicative, vary by variant, location and date, and should always be confirmed with the official OEM or authorised dealer before any purchase decision. DesiMachines is not liable for decisions taken on the basis of information that may have changed after publication.