Last updated at 04/09/2026 14:29:50
Nulon Radiator Flush and Clean 300 ml
Delivery $6.60
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Nulon Radiator Flush and Clean R40 300ml | OnlineAutoParts.com.au
Delivery between Wed – Fri $5.81
Nulon Radiator Flush and Clean 300ml - R40
Free 60-day returns
Nulon Radiator Flush And Clean 300ml - R40
Delivery $5
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Nulon Radiator Flush and Clean 300ml R40
Delivery between 7–17 Sept $10.95
Nulon Radiator Flush & Clean - 300ml
Delivery between 9–17 Sept $8.73
Nulon Radiator Flush & Clean 300ml
Delivery $12
Radiator Flush & Clean 300ml R40 | Nulon | Additive
Delivery between 10–18 Sept $20
Nulon Radiator Flush and Clean 300ml (R40)
Delivery $8.80
Nulon Flush & Clean 300ML
originally posted on supercheapauto.com.au
Can’t tell if this worked or not, my reservoir and coolant tank was quite clean before putting this in.came out basically same. I’d probably go for this if my coolant was neglected or had rust maybe
originally posted on supercheapauto.com.au
I added this to my car after I had already drained and flushed the system with fresh water.I was not prepared for what came out! (pictured below)I found taking the car for a drive gave the best results.
originally posted on supercheapauto.com.au
I've used NULON products for years and I've been using NULON on my Citroen C4 Mk2 e-HDi EGS 2011 turbo diesel since it was new and all along for all my oil (3W-30 & now 5W-40) and the oil flush and now I'm using the 'Premium Red Coolant 100% Concentrate' in my first coolant change and both work like a charm, they are all premium products and this radiator flush & clean is an excellent product as well as are all NULON products. Highly recommended very superior quality and impressive Australian product!!!
| Capacity | 0.300 |
Nulon Radiator Flush and Clean 300 ml
Delivery $6.60
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Nulon Radiator Flush and Clean R40 300ml | OnlineAutoParts.com.au
Delivery between Wed – Fri $5.81
Nulon Radiator Flush and Clean 300ml - R40
Free 60-day returns
Nulon Radiator Flush And Clean 300ml - R40
Delivery $5
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Nulon Radiator Flush and Clean 300ml R40
Delivery between 7–17 Sept $10.95
Can’t tell if this worked or not, my reservoir and coolant tank was quite clean before putting this in.came out basically same. I’d probably go for this if my coolant was neglected or had rust maybe
I added this to my car after I had already drained and flushed the system with fresh water.I was not prepared for what came out! (pictured below)I found taking the car for a drive gave the best results.
I've used NULON products for years and I've been using NULON on my Citroen C4 Mk2 e-HDi EGS 2011 turbo diesel since it was new and all along for all my oil (3W-30 & now 5W-40) and the oil flush and now I'm using the 'Premium Red Coolant 100% Concentrate' in my first coolant change and both work like a charm, they are all premium products and this radiator flush & clean is an excellent product as well as are all NULON products. Highly recommended very superior quality and impressive Australian product!!!
Excellent produce. Easy to use. Removed a lot of gunk. Very happy.
Excellent product.Cleaned up inside my radiator very well.
After draining out the old coolant from the engine. I top the coolant system with water and added this product to it ran the engine up to running temperature. Then shut the engine down let it cool down and drain it out. To my surprise the water that came put was very dirty. This product really clean up the cooling system. Then I refilled the system with red long life coolant and the engine has a performing very well.
Ran this through my cooling system with clean water after dumping the existing coolant that looked tired but clean. The flush with clean water and Nulon brought out quite a bit of gunk that wasn't there on the first flush so i can only assume it does the job.
Flushed radiator, engine & heater core all separately until water came out clear. Reconnected all hoses tipped in "Flush & Clean" and refilled cooling system. Went for short drive to circulate properly came home and waited 2hrs for everything to cool down. Dropped water again (it was filthy so did its job) and reflushed everything again before adding new coolant. Note: Flushed with heaters on and thermostat removed. Thermostat was replaced before new coolant was added.
Did an excellent job ran for 30 mins sat for a further 30 mins before 1st flush 8 tap water flushes later it finally ran clear ( car had been sitting in driveway for 3 years). A lot of junk came out and initially the drain was just dripping even with the radiator cap released it now dumps the radiator fluid really quickly.Only used half a bottle
I have just used this product on my L300 van. Followed instructions to the letter, ran engine for 40 minutes, spent a few hours flushing and back flushing but no gunk came out.I have been using Nulon products well over 20 years believing them to be as good or better than anything else available in Australia. NOT ANYMORE.
| Capacity | 0.300 |
Nulon Radiator Flush & Clean 300ml - R40
Nulon Radiator Flush & Clean 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 Radiator Flush and Clean overcomes this potential risk as the whole cleaning process is completed in one simple operation. Recommended Uses Use Radiator Flush and Clean as a complete cooling system flush to remove insulating built-up sludge and residue before changing the 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, cleaning the system with Radiator Flush and Clean is always recommended. Use Radiator Flush and Clean before removing a radiator from a vehicle for reconditioning. Clean the entire system with Radiator Flush and Clean so that when the radiator is reinstalled, the core will not be contaminated with scale and residue from the rest of the system.
Nulon Radiator Flush & Clean 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 Radiator Flush and Clean overcomes this potential risk as the whole cleaning process is completed in one simple operation. Recommended Uses Use Radiator Flush and Clean as a complete cooling system flush to remove insulating built-up sludge and residue before changing the 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, cleaning the system with Radiator Flush and Clean is always recommended. Use Radiator Flush and Clean before removing a radiator from a vehicle for reconditioning. Clean the entire system with Radiator Flush and Clean so that when the radiator is reinstalled, the core will not be contaminated with scale and residue from the rest of the system.
Nulon Radiator Flush & Clean 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 Radiator Flush and Clean overcomes this potential risk as the whole cleaning process is completed in one simple operation. Recommended Uses Use Radiator Flush and Clean as a complete cooling system flush to remove insulating built-up sludge and residue before changing the 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, cleaning the system with Radiator Flush and Clean is always recommended. Use Radiator Flush and Clean before removing a radiator from a vehicle for reconditioning. Clean the entire system with Radiator Flush and Clean so that when the radiator is reinstalled, the core will not be contaminated with scale and residue from the rest of the system.
Nulon Radiator Flush & Clean 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 Radiator Flush and Clean overcomes this potential risk as the whole cleaning process is completed in one simple operation. Recommended Uses Use Radiator Flush and Clean as a complete cooling system flush to remove insulating built-up sludge and residue before changing the 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, cleaning the system with Radiator Flush and Clean is always recommended. Use Radiator Flush and Clean before removing a radiator from a vehicle for reconditioning. Clean the entire system with Radiator Flush and Clean so that when the radiator is reinstalled, the core will not be contaminated with scale and residue from the rest of the system.
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The lowest price for Nulon Radiator Flush & Clean 300ml - R40 right now is $12.55 at Online Auto Parts, compared across 20 retailers.
The all-time low was $9.99 on 22 Oct 2025 — today's price is 26% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 4 Sept 2026.