Construction and Plant Lubricants

Supporting Demanding Construction and Plant Operations

Modern construction and plant machinery combines increasingly powerful engines with advanced hydraulic, transmission and emissions-control systems. Correct lubricant selection is essential to protect these components and maintain reliable performance throughout demanding working cycles.

Rock Oil products are designed to help:

• Protect machinery operating under heavy loads and high pressures.
• Reduce wear across engines, transmissions and hydraulic systems.
• Maintain lubricant stability in changing temperatures.
• Support equipment cleanliness and reliable system operation.
• Reduce avoidable maintenance-related downtime.
• Provide practical product options across mixed equipment fleets.

Lubricants for Construction and Plant Applications

Rock Oil offers products for a wide variety of construction and off-highway equipment, including excavators, loaders, dumpers, cranes, access equipment, compactors, generators and associated mobile plant.

The Construction and Plant range brings together heavy-duty engine oils, hydraulic fluids, universal tractor transmission oils and dedicated TO-4 transmission lubricants, alongside supporting products for cooling systems, gear drives and routine maintenance.

Heavy-Duty Engine Oils

Rock Oil’s TRUCK-GUARD® range includes engine oils suitable for selected construction, plant and off-highway applications.

The range provides mixed-fleet, low-ash, synthetic and semi-synthetic formulations across several viscosity grades. Products are available for different engine generations, operating conditions and emissions-system requirements.

Selected products are designed to support:

Engine Wear Protection

Advanced additive systems help protect critical engine components operating under load, supporting long-term reliability and equipment life.

Engine Cleanliness

Detergent and dispersant technology helps control soot, deposits and contamination during extended or high-duty operation.

Thermal and Oxidation Stability

TRUCK-GUARD® oils are designed to resist degradation during demanding operating cycles and prolonged periods at working temperature.

Low-Ash Performance

Selected low-ash products support modern diesel engines fitted with exhaust after-treatment and emissions-control systems.

Extended Service Intervals

Certain TRUCK-GUARD® products are suitable for extended oil-drain intervals where permitted by the relevant equipment manufacturer.

The available range includes products carrying specifications, recommendations or approvals associated with manufacturers including Caterpillar, Cummins, Deutz, Liebherr, MAN, Mercedes-Benz/Daimler Truck, Scania and Volvo.

Hydraulic Lubricants

Hydraulic systems are central to the operation of construction machinery, powering lifting equipment, booms, buckets, steering systems and other critical functions.

Rock Oil’s ULTRA-HYD range provides a broad selection of hydraulic lubricants for mobile and industrial equipment.

ULTRA-HYD HLP

ULTRA-HYD HLP products are premium mineral-based hydraulic fluids designed to provide wear protection, oxidation resistance, system cleanliness and reliable filtration performance.

They are suitable for a broad range of plant and machinery applications where consistent hydraulic protection is required.

ULTRA-HYD HVI

ULTRA-HYD HVI fluids provide improved viscosity stability across changing temperatures. This helps hydraulic systems maintain consistent pressure, flow and protection from cold start-up through to full operating temperature.

They are particularly suitable for mobile machinery working outdoors or in environments subject to significant temperature variation.

Specialist Hydraulic Options

The wider ULTRA-HYD portfolio also includes:

• Long-life hydraulic fluids.
• Fully synthetic formulations.
• Zinc-free hydraulic oils.
• Detergent hydraulic fluids.
• Biodegradable products.
• Fire-resistant hydraulic fluids.
• High-viscosity-index, long-life options.

These products provide additional support for machinery operating under extreme loads, in environmentally sensitive areas or where specialist safety and performance requirements apply.

Off-Highway Transmission Lubricants

Construction and plant transmissions operate under high loads and require fluids specifically matched to the transmission, brake and hydraulic system design.

Rock Oil’s range includes several options for off-highway equipment.

AGRI-GUARD® TO-4 Transmission Oils

AGRI-GUARD® TO-4 lubricants are designed for selected off-highway transmissions requiring Caterpillar TO-4 or related performance standards.

The range includes different viscosity grades for use across transmissions, final drives and associated systems where the relevant manufacturer specification is required.

Universal Tractor Transmission Oils

AGRI-GUARD® UTTO products are multifunctional fluids developed for equipment where the transmission, hydraulic system, wet brakes, clutches and differentials share a common lubricant.

Options include AGRI-GUARD® UTTO 10W-30 and the synthetic UTTO SYN WB 102 formulation for selected applications.

Multifunctional Off-Highway Lubricants

The range also includes AGRI-GUARD® TRANS 80W-140 for selected off-highway transmission applications requiring an API GL-4 lubricant.

Automatic and Specialist Transmission Fluids

Alongside dedicated off-highway lubricants, Rock Oil supplies automatic and manual transmission fluids for specialist vehicles and equipment.

The wider transmission range includes ATF, MTF, CVT and DCT fluids, as well as selected heavy-duty transmission products and specialist system fluids.

Correct selection is essential, as different transmission designs can require significantly different fluid technologies. Products should always be matched to the equipment manufacturer’s stated specification.

Industrial Gear Oils

Rock Oil supplies industrial gear lubricants for enclosed gear systems and associated plant applications.

These products are intended to support reliable gear operation, wear protection and lubricant stability under load. Product selection should consider the required viscosity grade, gear design, operating temperature, load and relevant manufacturer specification.

Specific INDUS-GEAR products, performance claims and approvals should be added once the current INDUS-GEAR Industrial Gear Oil Range Info Sheet is available.

KOOL-GUARD Antifreeze and Coolants

The KOOL-GUARD range provides coolant and antifreeze products for construction equipment, commercial vehicles, agricultural machinery, industrial applications and mobile plant.

The range includes IAT, OAT, NOAT and HOAT technologies, with concentrated and ready-to-use products available.

KOOL-GUARD products are designed to help:

• Maintain cooling-system efficiency.
• Protect against freezing and overheating.
• Control corrosion within the cooling system.
• Support long-term engine reliability.
• Meet selected equipment and engine manufacturer requirements.

The range includes products associated with specifications from manufacturers including Caterpillar, Cummins, JCB, John Deere, MAN, Mercedes-Benz/Daimler Truck, Perkins and Volvo.

Greases and Ancillary Products

Construction equipment includes a wide range of bearings, pins, bushes, joints and other moving components exposed to pressure, vibration, water and contamination.

Rock Oil supplies high-performance greases and ancillary lubricants designed to support:

• Protection under heavy loads.
• Resistance to water wash-off.
• Corrosion protection.
• Reliable lubrication of bearings and moving joints.
• Reduced wear across frequently serviced components.

The correct grease should be selected according to the component, operating temperature, loading and equipment manufacturer’s recommendations.

Aerosols and Workshop Support Products

Rock Oil also supplies practical maintenance products for construction workshops, mobile servicing and routine equipment care.

The aerosol and spray range includes products for:

• Cleaning and degreasing.
• Penetrating lubrication.
• Corrosion protection.
• Anti-seize applications.
• Chain, cable and open-gear lubrication.
• General workshop maintenance.
• Protecting exposed components from moisture.

These products provide convenient support for servicing, repair and preventative maintenance across mixed plant fleets.

Supporting Modern Engine and Emissions Technology

Modern construction machinery may use advanced engine-management, exhaust after-treatment and emissions-control systems. These can include exhaust gas recirculation, selective catalytic reduction and diesel particulate filtration.

Selected low-ash TRUCK-GUARD® formulations are developed for use in modern heavy-duty engines where the relevant API, ACEA and equipment manufacturer requirements specify this type of lubricant.

Because requirements differ between equipment models and engine generations, products should always be selected according to the manufacturer’s specification rather than emissions standard alone.

Designed for Harsh Working Environments

Construction and plant equipment is routinely exposed to dust, mud, water, vibration, heavy loading and prolonged operation.

Rock Oil lubricants are developed to help maintain protection in these conditions by supporting:

• Reliable component lubrication.
• Resistance to wear and oxidation.
• Stable hydraulic performance.
• Protection against corrosion and contamination.
• Longer component and lubricant life where suitable.
• Reduced maintenance-related disruption.

Whether supporting a single machine or a mixed fleet, Rock Oil can help identify suitable products for engines, transmissions, hydraulic systems, gear drives, cooling systems and general servicing requirements.

Responsible Product Performance

Correct lubrication can help improve equipment efficiency, extend component life and reduce unnecessary waste.

Rock Oil’s range includes long-life, extended-drain, zinc-free and biodegradable technologies for selected applications. These products can help reduce lubricant consumption, maintenance frequency and environmental risk when correctly specified and used in line with manufacturer guidance.