Bardahl Radiator Stop Leak 500ml

Bardahl Radiator Stop Leak 500ml

In stock
£8.99
£8.99
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  • Professional approved formula
  • Solution in a bottle
  • Bardahl’s state of the art technology

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What It Does

Bardahl Radiator Stop Leak seals cooling system leaks quickly and safely to protect engines from overheating.

How To Use

Turn on cabin heating. Check and top up coolant level if required. Shake bottle well and add contents to cooling system. Run engine for 10 minutes. Switch off engine and allow product to seal leaks. One bottle treats up to 6 litres of coolant.

Problem

Small leaks in the cooling system can cause coolant loss, overheating and serious engine damage if left untreated.

Possible Causes

  • Ageing hoses and seals
  • Micro cracks in radiator or engine block
  • Vibration and pressure in modern engines
  • Thermal expansion and contraction

Solution

Bardahl Radiator Stop Leak is a high-performance cooling system additive that penetrates and seals micro leaks and cracks in radiators, hoses and engine components. It restores cooling system integrity while maintaining proper coolant circulation.

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Benefits:

  • Stops and prevents coolant leaks
  • Seals micro cracks without blocking passages
  • Protects against corrosion
  • Resists high temperature and pressure
  • Safe for aluminium radiators and rubber hoses
  • Prevents overheating and coolant loss

Vehicle Type

Suitable for petrol, diesel and LPG engines. Compatible with aluminium and plastic radiators and all coolant types.

Seals cooling system leaks quickly without dismantling.

Product Downloads

Download Technical Data Sheet Download Safety Data Sheet
Bardahl Radiator Stop Leak 500ml

£8.99

What are Bardahl radiator and cooling system additives used for?

Bardahl radiator and cooling additives are designed to clean, protect and maintain the cooling system, helping to regulate engine temperature, prevent overheating and support efficient heat transfer. They assist in extending the life of the radiator, hoses and cooling components.

When should I use Radiator Cleaner?

Radiator Cleaner is used before changing coolant to remove scale, rust, sludge and internal deposits from the cooling system. It helps restore proper coolant circulation and improves the effectiveness of fresh antifreeze or coolant.

What is Radiator Oil Remover and when is it needed?

Radiator Oil Remover is designed to eliminate oil contamination from the cooling system, which can occur due to gasket failure or oil cooler leaks. Removing oil residue helps prevent hose degradation, blockages and overheating.

How does Radiator Stop Leak work?

Radiator Stop Leak seals minor leaks and porosities in radiators, hoses and cooling system joints. It helps prevent coolant loss and overheating without dismantling the system, making it a quick preventative or corrective solution.

Can cooling system additives help prevent overheating and costly repairs?

Yes. Regular use of products such as Radiator Cleaner and Radiator Stop Leak helps maintain efficient coolant flow, reduce internal contamination and address small leaks early, supporting stable engine temperatures and reducing the risk of major cooling system failures.

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