Engine Coolant with Long-Lasting Protection

Rock Oil Kool Guard is a high-performance ethylene glycol-based engine coolant designed to provide advanced cooling system protection for all types of vehicles. Furthermore, by using Organic Acid Inhibitor Technology (OAT), this premium coolant delivers reliable corrosion protection, improved coolant stability and long-lasting performance in demanding operating conditions.

In addition, Rock Oil Kool Guard XL UK is formulated without nitrites, amines, phosphates, borates or silicates. As a result, it provides modern cooling system protection without relying on traditional inorganic inhibitors. Moreover, its advanced formulation offers excellent hard-water stability and low inhibitor depletion rates, helping maintain effective protection over extended service intervals.

When correctly used, Kool Guard provides long-term corrosion protection for a minimum of 5 years or 250,000 km. Additionally, for commercial vehicles, protection can extend up to 500,000 km, helping to reduce maintenance requirements and improve vehicle reliability.

Furthermore, suitable for use in all vehicles, this high-quality engine coolant helps protect vital cooling system components against corrosion, overheating and performance loss. For the best results, a 50% dilution with good-quality water is recommended, following the vehicle manufacturer’s guidelines.

Finally, Kool Guard is compatible with most other ethylene glycol-based coolants. However, for maximum performance and durability, cooling systems previously filled with traditional coolant should be drained and flushed with clean water before refilling.

 Features

• High-performance ethylene glycol-based engine coolant
• Uses advanced Organic Acid Inhibitor Technology (OAT)
• Provides long-lasting corrosion protection
• Protects for up to 5 years or 250,000 km when correctly diluted
• Suitable for commercial vehicles up to 500,000 km protection
• Free from nitrites, amines, phosphates, borates and silicates
• Excellent hard-water stability
• Low inhibitor depletion rates for extended performance
• Suitable for all vehicle types
• Compatible with most ethylene glycol-based coolants
• Helps protect cooling system components from corrosion and damage

Rock Oil Kool Guard XL UK Application & Usage

It is suitable for use in automotive and commercial vehicle cooling systems. For best performance, dilute with good-quality water at the recommended 50% concentration or follow the vehicle manufacturer’s instructions.