Lubricants for differentials: the importance of choosing the right one

The differential plays a key role in a vehicle's transmission, allowing the wheels to rotate at different speeds, optimizing traction and maneuverability, especially when cornering. Its correct operation depends largely on adequate lubrication, as this minimizes friction and wear and tear.

For professionals in the sector, understanding the importance of differential lubricants is vital, since they can ensure the performance and longevity of these components. 

Types of lubricants for differentials

Choosing the right lubricant for your differential depends on several factors, including the type of differential, operating conditions, or manufacturer specifications. They are grouped into three types:

• Mineral oils. They are derived from crude oil and are the cheapest option. They offer good protection under normal operating conditions, but their performance decreases in extreme temperatures.
• Synthetic oils. They have been manufactured using chemical processes and offer superior performance over a wider range of temperatures. They are more resistant to oxidation and degradation, which extends their useful life.
• Semi-synthetic oils. They are a blend of mineral and synthetic oils and offer a balance between cost and performance. They tend to have better resistance to temperature and oxidation than mineral oils, but do not reach the level of synthetic oils.

The importance of viscosity and specifications

Lubricant viscosity is a critical factor for differential efficiency and protection. Classified according to the SAE J306 norm, which indicates the viscosity at different temperatures: a lower number means greater fluidity, while a higher one means greater thickness. 

That's why it is also essential to use the viscosity recommended by the vehicle manufacturer to ensure correct operation, as they take into account diverse areas such as load capacity, wear and tear protection or corrosion resistance. 

Repsol's Navigator range

Repsol, with its extensive experience in lubricant formulation, offers you the Navigator range, designed to cover all differential needs. These lubricants, formulated with high quality bases and cutting-edge additives, provide superior protection, guaranteeing optimal performance in a wide range of temperatures and operating conditions.

To ensure you choose the right lubricant for your differential, the Repsol Lubricants portal has a complete product search engine. You can find the ideal product by simply typing in the vehicle model or license plate number. 

You can also find the complete Repsol Lubricants catalogs on the portal, as well as the technical data sheets with detailed information on properties, specifications, and approvals.