Benefits:

  • Provides protection for up to 2 years or 40,000 km
  • Concentrated solution - makes 10 litres
  • Recommended for motor sport use
  • Exceeds Australian Standard AS 2108-2004 Type B coolant
  • Recommended for motor sport because it contains no glycol
  • Harmless to hoses & seals
  • Protects all cooling systems against corrosion, rust & scale

Ultra Cool

Nulon Ultra Cool Anti-Corrosion Radiator Coolant (R45) is formulated to provide maximum rust and corrosion protection for your engine's cooling system. It will keep your radiator and cooling system clean and free from corrosion, electrolysis, rust and scale build-up. Nulon Ultra Cool protects aluminium, copper, cast iron, brass and solder, and extends the life of all cooling system components.

Suits pre-1984 cooling system requirements

NOT suitable where anti-freeze/anti-boil coolant is specified. Use Nulon Long Life Concentrated Coolant (LL) for anti-freeze/anti-boil protection.

Nulon Ultra Cool (R45) contains corrosion inhibitors and is designed to provide maximum heat transfer in cooling systems where anti-freeze/anti-boil (glycol) is not specified. Heat transfer in the cooling system is done predominantly by water which has an excellent heat transfer coefficient. Glycol has the ability to extend the operating temperature range of a coolant, however it has a higher heat transfer coefficient than that of water. This is the main reason why non-glycol based coolants transfer heat much more efficiently than glycol based coolants.

In motor sport applications, Nulon Ultra Cool (R45) is a suitable alternate to glycol based coolant. Glycol is very slippery and is difficult to remove from the race track surfaces, which poses risks to other drivers on the track.

The use of tap water is not recommended for automotive cooling systems. Chlorine is usually added to tap water in order to kill bacteria and make it safe for drinking. However chlorine is found to be corrosive in cooling systems. Tap water also contains minerals that can cause scaling when used in a cooling system. Use suitable demineralised water for use with R45.

Where a vehicle manufacturer particularly specifies the use of anti-freeze/anti-boil coolant with glycol it is essential to use it as some engines suffer from localised "hot spot" boiling and require a glycol coolant.


  • Provides protection for up to 2 years or 40,000 km
  • Concentrated solution - makes 10 litres
  • Recommended for motor sport use
  • Exceeds Australian Standard AS 2108-2004 Type B coolant
  • Recommended for motor sport because it contains no glycol
  • Harmless to hoses & seals
  • Protects all cooling systems against corrosion, rust & scale

Refer to your owner's manual for cooling system capacity. NOTE: If the cooling system is dirty or rusty, clean it with Nulon R40 Radiator Flush and Clean. Half-fill the system with clean soft or demineralised water. Add the required amount of Nulon R45 (refer to the owners' manual for capacity) and top up with water as specified above. Run the engine to circulate and remove any airlocks, check the level and top up if necessary, check for leaks and secure the radiator cap. Repeat this treatment every 40,000 km or once every 2 years, whichever occurs first. Top-up should always be with the correct ratio of R45 and demineralised water.

Warning

Under no circumstances mix radiator products of different brands, and never under-treat with radiator products.

Application Rates

Add at 5% of cooling system capacity, i.e. if the system holds 10 litres, add 500 ml.


Part numbers

Click on image to download image

Ultra Cool
Part No.R45

500 ml bottle
6 per carton

Barcode: 9311090000247
Ultra Cool
Part No.R45-1

1 ltire bottle
6 per carton

Barcode: 9311090000742
Ultra Cool
Part No.R45-20

20 litre drum
Single unit

Barcode: 9311090000261

Other Products