Free Express Shipping on orders over £70!

750+ 5 Star Reviews on Google & Trustpilot!

  • Free shipping

    On all orders over £70

  • 7 Days Support

    Open 7 days a week

  • Easy returns

    Hassle free returns policy

  • Professional Advice

    Advice from Pro Detailers

STP Radiator Flush Cooling System Cleaner 300ml

£4.95
Tax included Shipping calculated at checkout.
STP  |  SKU: GST95300EN06


Key Features of

Delivery and Shipping

Standard Delivery (2-3 Working Days) from £3.75

Express Delivery (1-2 Working Days) from £4.95

Same day dispatch on all orders before 2PM, weekdays.

Flexible Credit Available

Buy now, Pay Later with our payment partners Klarna. Interest free payments on all detailing and car cleaning products, keeping you topped up without the stress of spending.

Need detailing advice? Speak to our team 7 days a week!

STP Radiator Flush Cooling System Cleaner 300ml

Description

STP Radiator Flush is designed to clean the cooling system quickly and effectively. It clears blocked water channels that can cause overheating, removing rust and sludge.

Use before changing coolant or adding anti-freeze, to help keep your cooling system in optimum operating condition.

How it helps:

  • Clears blocked water channels
  • Reduce risk of overheating
  • Keep cooling system in optimum operating condition

USAGE DIRECTIONS

  1. Shake bottle well & pour entire bottle into radiator
  2. Leave in the cooling system and drive for about 30 minutes
  3. Drain the radiator when cold, flush and refill with appropriate coolant/anti-freeze per manufacturer instructions
  4. On vehicles where heater cannot be drained (see handbook), run the engine with the heater on, until the engine has warmed up, then drain the system and flush with clean water before adding anti-freeze.

Usage Frequency: Use with every coolant change or annually.

How to use

Payment & Security

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Maestro
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Cant find what you're looking for? Let us help!

STP

STP Radiator Flush Cooling System Cleaner 300ml

£4.95

STP Radiator Flush is designed to clean the cooling system quickly and effectively. It clears blocked water channels that can cause overheating, removing rust and sludge.

Use before changing coolant or adding anti-freeze, to help keep your cooling system in optimum operating condition.

How it helps:

USAGE DIRECTIONS

  1. Shake bottle well & pour entire bottle into radiator
  2. Leave in the cooling system and drive for about 30 minutes
  3. Drain the radiator when cold, flush and refill with appropriate coolant/anti-freeze per manufacturer instructions
  4. On vehicles where heater cannot be drained (see handbook), run the engine with the heater on, until the engine has warmed up, then drain the system and flush with clean water before adding anti-freeze.

Usage Frequency: Use with every coolant change or annually.

View product