Commercial Vehicle Lubricants

TRUCK-GUARD® lubricants are designed for heavy-duty vehicles, including haulage trucks, buses, and coaches. Developed to withstand the most demanding conditions, these products assist with:

  • Extending engine life with superior wear protection.
  • Reducing oil and fuel consumption, cutting operational costs.
  • Minimising particulate emissions for better environmental compliance.

Our products are fully compatible with engines adhering to Euro I through Euro VI standards, the TRUCK-GUARD® range is recognised for its reliability and versatility. With OEM approvals from leading manufacturers such as Mercedes, Volvo, Scania, and MAN, you can trust TRUCK-GUARD® to meet or exceed the requirements of your fleet’s engines and components.


The TRUCK-GUARD® range offers a comprehensive selection of multi-grade and specialised formulations designed to perform across all climates and operating conditions. With options that adapt to diverse environmental and operational demands, the range includes formulations that support extended maintenance intervals, minimising downtime and maximising efficiency. Additionally, advanced low ash technology ensures compatibility with modern engines equipped with systems like SCR and EGR, meeting stringent emission standards.


At Rock Oil, sustainability is a priority. The TRUCK-GUARD® range is designed to:

  • Improve fuel efficiency by reducing friction.
  • Minimise emissions to meet and exceed environmental standards.
  • Extend service intervals, reducing waste and environmental impact.

By choosing Rock Oil, you enhance your fleet’s performance while contributing to a greener future.


Beyond the TRUCK-GUARD® range, Rock Oil offers a suite of ancillary products to optimise fleet operations:

  • Gearbox Oils: High-performance formulations for smooth, reliable operation.
  • Axle and Bearing Greases: Engineered for heavy loads, providing superior corrosion resistance and water tolerance.
  • Damping Oils: Designed to enhance suspension efficiency and improve ride comfort.

Choose Rock Oil for Commercial Fleets

    • Tailored Solutions: Products designed for the specific demands of commercial vehicles.
    • OEM Approvals: Trusted by leading manufacturers for compatibility and performance.
    • Cost Efficiency: Extended drain intervals and reduced operational disruptions.
    • Sustainability Focus: Eco-friendly formulations to meet modern environmental standards.