Castrol Transmax Agri Trans Plus 80W – 20L

Premium Universal Tractor Transmission Oil for Transmissions, Hydraulics, Wet Brakes and Final Drives

Product Overview

Castrol Transmax Agri Trans Plus 80W is a premium agricultural transmission and hydraulic fluid developed for tractors, farm machinery, off-highway equipment and agricultural driveline systems requiring a high-performance 80W universal tractor transmission oil. It is designed for use in transmissions, hydraulic systems, final drives, wet brakes and power take-off clutch systems where the equipment manufacturer specifies a UTTO-type lubricant with excellent friction control, anti-wear protection and hydraulic performance.

Agricultural machinery places unique demands on lubricants because one fluid may be required to perform multiple roles at the same time. In a tractor or harvester, the oil may lubricate gears, provide hydraulic pressure, protect final drives, control brake friction, cool clutch packs and operate PTO systems. Castrol Transmax Agri Trans Plus 80W is formulated to provide this combined performance in one oil, helping farmers, workshops and contractors simplify lubricant selection while maintaining reliable protection across critical components.

The 80W viscosity grade offers excellent all-round performance for equipment requiring an agricultural transmission oil with strong load-carrying capacity and reliable operation across mixed seasonal use. It provides good cold-start flow, stable hydraulic response and robust film strength for heavily loaded gears and bearings. This makes it suitable for machinery working in demanding rural, construction and off-road environments where equipment may operate for long hours under heavy load, dust, heat, moisture and vibration.

Castrol Transmax Agri Trans Plus 80W is especially valuable in tractors and agricultural machines fitted with wet brake systems. Incorrect fluid selection can lead to brake chatter, vibration, noise and poor operator comfort. This product is designed with controlled friction characteristics to help ensure smooth wet brake operation, reliable clutch engagement and consistent power transfer.

The 20L pack size is ideal for farms, workshops, rural service vehicles and machinery maintenance operators who require a practical container size for scheduled servicing, field maintenance and top-ups.

Specifications & Approvals

Castrol Transmax Agri Trans Plus 80W is designed to meet the performance requirements of universal tractor transmission oils used in modern and older agricultural machinery.

Industry Performance Level

• SAE 80W
• Universal Tractor Transmission Oil performance
• Suitable for hydraulic systems, transmissions, final drives and wet brakes
• Suitable for tractor transmission and hydraulic fluid applications where UTTO-type oil is specified
• Suitable for power take-off clutch systems requiring controlled friction performance
• Suitable for wet brake systems requiring chatter control

Typical Manufacturer Suitability

Castrol Transmax Agri Trans Plus 80W may be suitable for applications requiring performance levels commonly associated with agricultural transmission fluids used in equipment from manufacturers such as:

• Case IH
• New Holland
• John Deere
• Massey Ferguson
• Ford Tractor
• Fiat / Fiatagri
• Valtra
• Same-Deutz-Fahr
• Kubota, where compatible 80W UTTO-type fluid is specified
• Other agricultural and off-highway equipment requiring universal tractor transmission oil

Performance Characteristics

• Controlled wet brake friction performance
• Anti-wear protection for pumps, gears and bearings
• Hydraulic system performance and foam control
• Protection against rust and corrosion
• Good oxidation stability for long service life
• Seal compatibility for agricultural transmission and hydraulic systems
• Suitable for mixed farm equipment fleets where 80W UTTO performance is required

Always confirm the equipment manual before use, particularly where a dedicated engine oil, gear oil, CVT fluid, hydrostatic transmission fluid or manufacturer-specific fluid is required.

Key Features & Benefits

1. Multi-Function Tractor Transmission Performance

Castrol Transmax Agri Trans Plus 80W is designed to perform across several critical tractor systems. It can provide lubrication for transmissions and final drives while also supporting hydraulic system function, wet brake operation and PTO clutch performance. This reduces the need to stock multiple products and helps simplify maintenance across agricultural machinery.

2. Wet Brake Chatter Control

Wet brake performance is one of the most important requirements of a tractor transmission fluid. The wrong oil can cause squeal, vibration and chatter, especially during braking or low-speed manoeuvring. Castrol Transmax Agri Trans Plus 80W contains friction modifiers designed to provide smooth wet brake performance, improved operator comfort and reduced brake noise.

3. Reliable Hydraulic Operation

Modern tractors and implements rely heavily on hydraulic power for steering, lifting, implement control, loader operation and attachment movement. This oil provides stable hydraulic response, good air release and foam resistance, helping hydraulic pumps and valves operate efficiently.

4. Strong Anti-Wear Protection

The product contains anti-wear additives designed to protect gears, bearings, hydraulic pumps and driveline components. This helps reduce wear under high load and shock-loading conditions commonly found in ploughing, harvesting, loader work, hay production and other agricultural operations.

5. Final Drive and Gear Protection

Farm machinery often operates under high torque and low-speed loading, especially when towing implements or working in rough ground. Castrol Transmax Agri Trans Plus 80W provides a strong lubricant film to protect gear teeth and bearing surfaces against scuffing and fatigue.

6. Oxidation and Thermal Stability

Agricultural equipment may operate for long hours in hot conditions, especially during harvest or contracting work. This oil is formulated to resist oxidation and viscosity increase, helping maintain cleaner systems and consistent oil performance during extended service intervals.

7. Rust and Corrosion Protection

Moisture ingress, condensation and outdoor storage can expose machinery internals to corrosion risk. This product helps protect ferrous and non-ferrous components against rust and corrosion, supporting longer component life.

8. Seal Compatibility

Castrol Transmax Agri Trans Plus 80W is designed to be compatible with common seals and elastomers used in tractor transmissions and hydraulic systems. Good seal compatibility helps reduce leakage and maintain system reliability.

9. Practical 20L Workshop Pack

The 20L size is convenient for farm sheds, rural workshops, mobile mechanics and smaller service operations. It is easier to handle than a large drum while still providing economical supply for regular maintenance.

Applications

Castrol Transmax Agri Trans Plus 80W is suitable for:

• Tractor transmissions
• Hydraulic systems in farm machinery
• Wet brake systems
• PTO clutch systems
• Final drives and differentials where UTTO 80W fluid is specified
• Agricultural loaders and implements
• Harvesters, sprayers and hay equipment where compatible fluid is required
• Off-highway equipment requiring agricultural transmission fluid
• Rural workshops servicing mixed tractor brands

Common Equipment Use

This product is suited to many agricultural applications including:

• Tractors
• Front-end loaders
• Telehandlers requiring compatible UTTO oil
• Harvesters and headers
• Balers and hay equipment
• Sprayers and spreaders
• Agricultural utility machines
• Older and mixed-brand farm fleets

It should not be used in systems requiring dedicated automatic transmission fluid, CVT fluid, engine oil, limited slip differential oil, or heavy-duty hypoid gear oil unless the manufacturer specifically allows this product type.

Typical Physical Properties

Typical values are provided as a guide and may vary depending on production batch, regional formulation and manufacturer updates.

Handling & Storage Advice

• Store in a clean, cool, dry and well-ventilated area away from direct sunlight and excessive heat.
• Keep container sealed when not in use to prevent contamination from dust, dirt, water or other lubricants.
• Use clean dispensing equipment when filling transmissions, hydraulic systems or final drives.
• Avoid mixing with other oils unless compatibility has been confirmed.
• Always confirm the correct lubricant requirement in the equipment service manual before use.
• Do not use in braking systems requiring automotive brake fluid.
• Prevent spills from entering drains, waterways or soil.
• Dispose of used oil and empty containers according to local environmental regulations.
• Wear gloves and avoid prolonged skin contact during handling.
• Keep away from food, animal feed and drinking water storage areas.
• Refer to the product Safety Data Sheet for full health, safety and first-aid information.

Advantages for Farms, Contractors and Workshops

Castrol Transmax Agri Trans Plus 80W is a practical lubricant for farms and rural workshops because it covers multiple tractor system requirements in one product. For mixed machinery fleets, this can help reduce storage complexity and lower the risk of incorrect fluid use. A single UTTO-style oil that supports transmissions, hydraulics, final drives, wet brakes and PTO systems can improve servicing efficiency and make field maintenance easier.

For agricultural contractors, reliable lubricant performance is essential because equipment downtime during harvest, seeding or hay season can be costly. This oil helps protect driveline and hydraulic systems during long operating days, heavy implement work and harsh field conditions. For workshops, the 20L pack size is convenient for servicing individual machines, topping up hydraulic/transmission systems and supplying customers who need a manageable container size.

The controlled wet brake characteristics are particularly valuable for tractors and machinery where operator comfort and brake smoothness matter. Reduced chatter and smoother braking help improve machine feel and reduce unnecessary noise and vibration.