Coolant Filtration & Coolant

It's estimated that 40-50% of engine downtime is due to coolant system failure. And with today's diesel engines, balance is the key in coolant filtration to keep your engine running efficiently. Donaldson coolant filters remove contaminants and maintain cooling system balance – helping to keep today’s hot-running engines cool and reducing downtime.

Thermo-Tech Coolant

Donaldson’s Thermo-Tech range covers all of your fleet coolant needs, including conventional heavy-duty technologies, environmentally friendly organic product, and our superior long life propylene glycol hybrid offering.

PDF-icon.jpg Donaldson Thermo-Tech Brochure





Thermo-Tech EG

A conventional Ethylene Glycol (EG) based coolant. In 4WDs and cars this coolant will last up to 3 years or 100,000kms. In heavy-duty applications in can last up to 2 years or 320,000kms.

Thermo-Tech OAT Coolant

This is a more environmentally friendly coolant based on Organic Acid Technology (O.A.T.). In 4WDs and cars this coolant will also last up to 3 years or 100,000kms and in heavy duty applications it can extend out to 4 years or 1 million kms.

Thermo-Tech PG

This coolant utilises hybrid technology and is the superior coolant in the range. It is a Propylene Glycol (PG) based product and in 4WDs and cars this coolant can last up to 5 years or 250,000kms. In heavy-duty applications it can last up to 6 years or 1 million kms.





Thermo-Tech Radiator Flush

A non-acidic, alkaline-based engine cooling system cleaner designed for use with all types of diesel, petrol and gas engines.


Coolant filters

Remove contaminants and maintains the coolant’s chemical balance.