Search and compare the best products.

10 Best Radiator Stop Leaks – April 2020, UK

Over 76 Critic and User Reviews Scanned

No. 2
KALIMEX LTD ST5501 Coolant Leak Repair, One SizeRecommended by Tickrater
  • No flushing. Just shake, pour and go.
  • Multi Purpose ONe Step & Permanent
  • Mixes with all types of Antifreeze
  • Item Package Dimension: 4.4 cm L x 8.8 cm W x 12.6 cm H
SaleNo. 3
Holts Radweld 250mlRecommended by Tickrater
  • car parts
No. 4
Liqui Moly 8956 Radiator Stop LeakRecommended by Tickrater
  • Small leaks caused by stone impacts, porous soldering points and hairline cracks in the cooling simple are easy to localize (one notices that the cooling water level is sinking).
  • Used for sealing small leaks in cooling circuits of passenger motor vehicles, commercial vehicles, buses and two-wheel vehicles. Also suitable for cooling circuit with filters.
  • Shake container before use. Run the heating system. With the engine running, pour the contents into the cooling fluid at operating temperature and allow the engine to continue running for a further 10 minutes.
SaleNo. 5
Wynns Radiator Stop Leak 325mlRecommended by Tickrater
  • Enhanced protection against rust and corrosion.
  • Is formulated to avoid clogging of radiator waterways and temperature sensors.
  • Is compatible with all antifreezes and coolants, also with OAT coolants.
  • Will not harm rubber hoses, gaskets or other system components.
No. 6
Rust-Oleum Leak Stop White Spray 400ml Pipe Repair Rubberised Watertight...Recommended by Tickrater
  • Finish: Rubberised protective coating
  • Colour: White.
  • Coverage: 2 sq metres per can (approx).
  • Drying Time: Touch dry in 20-30 minutes
No. 7
CosWarm CW4 Central Heating Leak Sealer - Treats Up To 18 Radiators - Stops...Recommended by Tickrater
  • STOPS SMALL LEAKS & FIXES PRESSURE LOSS: CW4 Leak Sealer seals all the small and inaccessible leaks, thus saving time and money in draining down and repairing cost. Our boiler leak sealant also helps in fixing pressure loss due to minor leaks from central heating systems.
  • SUPER CONCENTRATED FORMULA: Our boiler and central heating system leak stopper can treat up to 18 single radiators, i.e., a 150-litre system. It is easy to use, just pour it in the system according to the instructions and let it work.
  • HARMLESS FOR METALS: There are many leak sealant chemicals that are not friendly when they come into contact with metals. CW4 Leak Sealer liquid is suitable for use with all the metals and materials, including steel, ferrous metals, copper and aluminium.
  • CONVENIENCE AT ITS BEST: Our leak sealer and stopper makes minor repairs in the boiler a breeze. It does not interfere with the working of your central heating systems and you won’t have to shut down the systems before or while using it. The product can be left in the system permanently.
No. 8
Power Maxed PMCSEAL Coolant Seal Radiator Stop LeakRecommended by Tickrater
  • Coolant seal permanently seals most leaks
  • Mixes with all types of antifreeze
  • Multi purpose one step & Permanent
  • Sealing leaks anywhere in the coolant system
SaleNo. 9
Rislone COOLING SYSTEM RADIATOR STOP LEAKRecommended by Tickrater
  • Safe to Use and Seals Instantly Stops Coolant Leaks, Guaranteed Contains Xtreme Cool Stops Overheating and Reduces Temperature
No. 10
Wynn's 1831015 55863 Radiator Stop Leak 325 mlRecommended by Tickrater
  • Value for money
  • Safely packed
  • High quality
  • Range always up-to-date

Holts Radweld 250ml

£4.13  in stock
24 new from £3.99
Buy Now
as of November 6, 2020 4:58 am


  • car parts

Read More

The 10 Best Radiator Stop Leaks to Buy 2020 - Auto Quarterly

Top 10 Best Radiator Stop Leaks 2020 1. K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair. Why we like it: Among all the reasons to get a... 2. Blue Devil Radiator & Block Sealer. Why we like it: If you are looking for a premium pack that does not disappoint,... 3. Prestone AS120 ...

Best Radiator Stop Leaks (Review & Buying Guide) in 2020 ...

Benefits of Radiator Stop Leak Prevent a breakdown. Driving with a radiator leak is incredibly harmful to your vehicle. Any major loss of radiator... Keep yourself safe. Making sure your car is topped off with radiator stop leak fluid means you’ll be safer on the road. Improve performance. Checking ...

Fix Coolant Leaks with Radiator Stop Leak - AutoZone

To spot a leak, it's best to first clean your radiator and surrounding components. Use a hose to clear off your radiator. Avoid wiping any part of the radiator as this could cause further damage to the fragile cooling fins of the radiator. Once your radiator is clean, check for any signs of cracks or leaks.

We will be happy to hear your thoughts

Leave a reply

Tick Rater
Login/Register access is temporary disabled