Cooltech OAT Long Life Coolant Concentrate gives your engine superior cooling system protection. It suits automotive and heavy-duty diesel engines. It meets major OEM and industry standards, so you get reliable freeze and boil-over protection across a wide range of vehicles and equipment.

Unlike conventional coolants, Cooltech uses an OAT (Organic Acid Technology) formula. It is silicate-free. That means longer water pump seal life and less scale build-up. It works with aluminium, copper/brass and mixed-metal systems. And it guards against corrosion, cavitation and cylinder liner pitting.

Mix it at 50% with good quality water. At that strength, Cooltech protects down to -34°C and lasts up to 5 years or 1,000,000 km. The concentrate boils at 176°C neat. One purchase treats a large volume, so it is a low-cost way to protect your cooling system for years.

Key Benefits

• ✓ Long service life up to 5 years / 1,000,000 km (at 50% dilution)
• ✓ Protects against corrosion, cavitation and liner pitting
• ✓ Silicate-free formula for improved water pump life
• ✓ Compatible with aluminium, copper/brass and mixed-metal systems
• ✓ Helps prevent scale and sludge build-up

Protection Performance

• ✓ Freeze protection (50% mix): -34°C
• ✓ Boiling point (neat): 176°C
• ✓ pH (50% solution): 7.5–9

How to Mix

Dilute with good quality water to a 50% v/v concentration for the best protection. Do not mix it with other coolant types, as this can reduce performance.

Applications

Cooltech suits passenger cars, light commercial vehicles, heavy-duty trucks, mining equipment and industrial diesel engines.

Frequently Asked Questions

What is an OAT coolant?
OAT stands for Organic Acid Technology. It uses organic acids instead of silicates to protect metal. This gives a longer service life and better protection for modern alloy engines.

Is Cooltech a long life coolant?
Yes. At a 50% mix it lasts up to 5 years or 1,000,000 km before it needs changing.

Can I use it in an aluminium engine?
Yes. Cooltech is safe for aluminium, copper/brass and mixed-metal cooling systems.

Do I need to dilute it?
Yes. This is a concentrate. Mix it 50/50 with quality water. If you want a pre-mixed option, choose our Cooltech RTU Ready-To-Use Coolant instead.