Gear Oil

Performance Level: GL4, GL5

• • • GL-4 (Gear Lubricant 4)

      GL-4 oils are typically designed for manual transmissions and moderate-duty hypoid gears. They provide moderate protection under high pressures between moving gear surfaces and are commonly used in synchronized manual transmissions and gearboxes. GL-4 gear oils contain lower levels of extreme pressure (EP) additives than GL-5 oils, making them less corrosive to brass and bronze components often found in manual gearboxes.
    
    

    • GL-5 (Gear Lubricant 5)

      GL-5 oils are formulated with a higher concentration of EP additives, making them suitable for severe conditions involving higher torque and pressure, such as hypoid gears found in differentials of trucks and high-performance vehicles. GL-5 oils are designed to handle higher loads and more extreme conditions, providing enhanced protection to gears, particularly in situations where there is a sliding contact between the gear surfaces. However, GL-5 oils may not be compatible with synchronized manual transmissions due to their higher levels of EP additives, which can cause corrosion of non-ferrous metals like bronze and copper.
    
    

  Packing Available: 1 Ltr, 5 Ltr, 10 Ltr, 20 Ltr, 50 Ltr, 210 Ltr

  The mentioned pack sizes—ranging from 1 liter to 210 liters—indicate the available quantities in which the gear oil is offered. These various sizes cater to different needs:

  • 1 Ltr, 5 Ltr, 10 Ltr:

    Suitable for individual vehicle owners or small repair shops requiring smaller quantities for regular maintenance.

  • 20 Ltr, 50 Ltr:

    Ideal for mid-size garages, workshops, or fleets of vehicles where oil changes and maintenance are performed more frequently.

  • 210 Ltr:

    Industrial gear oils is supplied in drums, industrial clients, large fleets, transportation companies, or workshops with heavy usage of gear oil use this large quantity.
  These varying packaging options provide flexibility based on the volume of oil needed, ensuring that customers can select the appropriate size based on their specific requirements.

  AQUAL Gear Oil 90 and AQUAL Gear Oil 140

  AQUAL Gear 90 and AQUAL Gear 140 are high-performance hypoid gear oils formulated to provide long service life. These oils meet the API GL-4 performance level, meaning they are designed for moderate-duty gear systems but still provide effective protection for the gears under pressure.

  • • Hypoid Gear Oils:

      Hypoid gears are typically found in the differential of cars and trucks, where the axes of the gears are non-intersecting. These gears require special lubricants due to the higher sliding action between the gear teeth. Hypoid gear oils, like AQUAL Gear 90 and 140, contain EP (Extreme Pressure) additives to handle the high loads and friction experienced by hypoid gears.

  • AQUAL Gear 90 and 140 are distinguished by their viscosity:

    • • • AQUAL Gear Oil 90:

          Suitable for light- to medium-duty applications. The lower viscosity makes it effective in cooler climates or situations where the gears require quicker flow and lubrication.

        • AQUAL Gear Oil 140:

          A higher-viscosity oil, ideal for heavy-duty applications, warmer climates, or vehicles that operate under more extreme conditions (e.g., high loads, high temperatures). This oil provides thicker film strength, giving more protection under extreme pressure.
        
        

  Long Service Life Due to Oxidation Stability

  One of the key benefits of AQUAL Gear 90 and AQUAL Gear 140 is their excellent oxidation stability. Oxidation stability refers to the oil’s ability to resist breaking down or degrading when exposed to high temperatures and oxygen over time. Good oxidation stability means that:
  • The oil will maintain its protective properties longer, even in high-temperature conditions common in hypoid gear systems.
  • It will resist the formation of sludge, varnish, or acidic compounds that can damage the gear system.
  • The oil will offer extended drain intervals, reducing the need for frequent oil changes and leading to lower maintenance costs over time.
  
  

  Gear Oil uses and Recommendations

  AQUAL Gear 90 and AQUAL Gear 140 are recommended for hypoid, spiral bevel, or worm transmission systems in vehicles like cars, buses, and trucks. These oils are specifically suited for EP (Extreme Pressure) type lubricants, meaning they can handle high-pressure conditions in transmission systems where metal-to-metal contact and heavy loads are common. These oils are particularly beneficial in:
  • • Hypoid Gears: Found in the differentials of vehicles, where the sliding action between the gear teeth requires oils with EP additives.
    • Spiral Bevel Gears: Found in rear-wheel-drive vehicles, where smooth, quiet operation is important.
    • Worm Gears: Typically found in certain industrial applications or older vehicles, where high torque is applied.
   

  Factors to Consider When Selecting Gear Oil:

  • • • • Viscosity:

          The viscosity of gear oil determines how easily it flows at different temperatures. Gear oils typically come in different grades (e.g., SAE 75W-90, 80W-140), and selecting the appropriate viscosity depends on the vehicle type, operating conditions, and manufacturer recommendations. Low-viscosity oils are suited for colder temperatures, while high-viscosity oils perform better in hotter environments or under heavy loads.
       

  • • • • Additive Composition:

          Gear oils contain additives such as anti-wear agents, extreme pressure (EP) additives, corrosion inhibitors, and detergents. These additives improve oil performance under specific conditions, such as high load-bearing situations, and enhance the oil’s ability to resist oxidation, corrosion, and degradation.
       

  • • • • Vehicle Type and Usage:

          The oil needed for a heavy-duty truck is different from what’s required for a passenger car. Similarly, off-road or high-performance vehicles may demand synthetic gear oils due to their ability to maintain optimal performance under more extreme conditions.
       

  • • • • Compatibility with Materials:

          Gear oil must be compatible with the seals and materials used in the transmission or differential system. Certain oils can cause deterioration of seals, leading to leakage or mechanical failures.
        
        

        • Operating Conditions:

          The climate and driving conditions (e.g., city driving, long highway trips, towing) significantly impact the choice of gear oil. High-speed or high-torque situations require oil with superior thermal stability and pressure resistance.
        
        

  Essential Attributes of Gear Oil:

  • • • Load-Carrying Capacity:

        Gear oils must endure high levels of pressure and force without breaking down. This is particularly important in systems where gears are constantly meshing under high torque and load. Oils with EP (Extreme Pressure) additives are essential for protecting gears in such conditions.
      
      

  • • • Thermal Stability:

        During operation, gears generate heat, and it is crucial for gear oil to maintain its properties at elevated temperatures. Oils with high thermal stability help prevent oxidation and sludge formation, which can damage gears and reduce efficiency.
      
      

  • • • Lubrication and Anti-Wear Protection:

        Effective lubrication ensures that metal surfaces remain separated, reducing friction and wear. Anti-wear additives in gear oil, such as zinc dialkyl dithiophosphate (ZDDP), provide extra protection for gear teeth under high stress, thus extending the life of the components.
      
      

  • • • Water Resistance and Corrosion Protection:

        Gear oil must be able to resist water contamination, which can lead to rusting and corrosion. Oils with water-repelling properties and corrosion inhibitors are essential, especially in environments where moisture or condensation may infiltrate the system.
      
      

  • • • Oxidation Resistance:

        Over time, gear oil is exposed to oxygen, which can lead to oxidation and the formation of acids or sludge. Oils with strong oxidation resistance maintain their performance over a longer period, ensuring consistent protection for gears.
      
      

      • Seal Compatibility:

        The oil must be compatible with the seals in the gearbox to prevent leaks and avoid damage to the sealing materials. Proper formulation ensures that the oil neither causes the seals to swell nor break down.