In recent years, the name Kool has become synonymous with safe engine temperatures and protection from corrosion. It was developed in association with Rock Oil’s international motorsport involvement and is suitable for both racing and road use.

Now Rock Oil brings you Kool XL!

• Kool XL is an ethylene glycol based ready to use engine coolant which employs an organic acid inhibitor technology.
• It is a pre-diluted (with de-ionised water) product.
• Free from nitrites, amines, phosphates, borates and silicates.
• Provides long lasting corrosion protection for a minimum of 5 years or 250,00Km.
• Gives total protection from -40oC to normal operating temperatures.

We recommend that prior to using Kool XL in systems previously filled with traditional coolant that the system is drained and flushed with clean water before filling with Kool XL