Nulon Radiator Flush and Clean 300mL R40

Part Number: R40
$11.95 Save 20%

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Nulon Radiator Flush and Clean 300mL Description

  • One step cleaning solution for your cooling system as a precursor to a coolant flush
  • 300mL bottle to treat single vehicle
  • One step cleaning solution for your cooling system as a precursor to a coolant flush
  • Safe on all seals, hoses and radiator materials
Radiator Flush and Clean

Nulon Radiator Flush & Clean (R40) is a non-acidic radiator and cooling system cleaner that effectively cleans in one simple 20-minute operation. Many similar products have to be left in the cooling system for several days, which creates the risk of the user either forgetting or extending the drain and flush time for reasons of convenience. The results can be detrimental and cause expensive, long-term damage to the cooling system and associated components. Nulon R40 overcomes this potential risk as the whole cleaning process is completed in one simple operation.

Recommended Uses

Use R40 as a complete cooling system flush to remove insulating built-up sludge and residue before changing coolant in any cooling system. This procedure will ensure optimum heat transfer and efficiency of the entire cooling system.
Whenever draining a cooling system or changing brands of coolant it is always recommended to clean the system with R40.
Use R40 before removing a radiator from a vehicle for reconditioning. Clean the entire system with R40 so when the radiator is reinstalled, the core will not be contaminated with scale and residue from the rest of the system.


- Cleans fast in 20 minutes
- Reduces overheating
- Safe to use with all coolant types
- No pre-mixing
- Neutralises harmful acids
- Reduces mineral scale and sludge


Capacity [Litre]0.300
Product NotesCleans fast in 20 minutes. Reduces overheating. Safe to use with all coolant types. No pre-mixing. Neutralises harmful acids. Reduces mineral scale and sludge.<br />
Part NumberR40
TypesAdditives - Cooling System
WarrantyLimited manufacturers warranty according to the installation and replacement instructions as given by Nulon and the manufacturer of your vehicle.

Buying Guides


We offer FREE shipping on all orders over $50 to metropolitan or regional addresses (excludes big and bulky items).

Orders of less than $50 and orders shipped to rural addresses are subject to a shipping fee that is calculated at checkout. See full shipping details here.


We offer 100% Fitment Guarantee, but if you choose to return an item we offer a generous 60 day returns policy with a full refund. See returns policy and fitment information here.


All products sold by Sparesbox are sold under the Manufacturer’s warranty and conditions from the date of purchase, unless otherwise stated on the item.

Warranty claims must meet certain criteria and be sent to Sparesbox with a receipt to be eligible for a refund. See full warranty claim criteria here.

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