TSI Supercool RD8 dye bottle for UV leak detection in cooling systems.
TSI Supercool RD8 dye bottle for UV leak detection in cooling systems.

TSI Supercool RD8 Radiator Dye – 8-Oz Self-Measure UV Leak Detection Bottle

TSI Supercool RD8 Radiator Dye is a synthetic UV-detectable leak tracer designed to help you identify cooling...
Vendor: TSI Supercool
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TSI Supercool RD8 dye bottle for UV leak detection in cooling systems.

TSI Supercool RD8 Radiator Dye – 8-Oz Self-Measure UV Leak Detection Bottle

£33.37
TSI Supercool RD8 dye bottle for UV leak detection in cooling systems.

TSI Supercool RD8 Radiator Dye – 8-Oz Self-Measure UV Leak Detection Bottle

£33.37
Description
Description
x

TSI Supercool RD8 Radiator Dye is a synthetic UV-detectable leak tracer designed to help you identify cooling system leaks without invasive disassembly. Packaged in an 8-ounce self-measure bottle, it lets you apply precisely 1 ounce per vehicle, making routine maintenance simpler and more predictable.

What makes RD8 effective

The dye blends with your vehicle’s coolant and travels along with it, turning transparent pathways into visible indicators under UV light. When you shine a UV light on the engine bay, potential leak points—such as hoses, radiators, and connections—may show up as glowing traces, helping you target inspections with confidence rather than guesswork.

Designed for water-cooled engines, this dye is formulated to be detectable with any UV light, so you can use standard shop lamps or portable UV devices to review results. The result is a practical aid for diagnostics that supports planning repairs or monitoring system integrity over time.

Key benefits at a glance

  • Synthetic UV leak detection dye that works with any UV light
  • Turns leaks or damp areas into visible signals for easier pinpointing
  • Self-measuring bottle with clear 1-ounce dosing per vehicle
  • 8-ounce bottle provides multiple treatments for various vehicles
  • Specifically formulated for water-cooled engines and cooling systems

Ideal uses and scenarios

  • Fast preliminary checks during routine maintenance or after coolant service
  • Diagnostics for cars, light trucks, and other water-cooled engines
  • Verification of suspected leak sites before more invasive repairs
  • Compatibility with standard UV lighting makes it a flexible diagnostic tool

How to use

  1. Shake the bottle to mix the dye with the coolant.
  2. Use 1 ounce per vehicle as a dosing guideline.
  3. Run the engine and observe under UV light for glowing leak indicators.
  4. Inspect hoses, radiator, water pump, seams, and clamps for signs of leakage.

RD8 offers a practical option for proactive maintenance, helping you visualize where cooling system integrity could be at risk. While results can vary with engine design and conditions, many users find it useful for faster diagnostics and informed decision-making.

FAQ

Q: What is RD8 dye used for?

A: RD8 is a UV-detectable dye designed to help reveal leaks in cooling systems; simply add 1 ounce per vehicle and inspect under UV light.

Q: How much RD8 dye should I use per vehicle?

A: Use 1 ounce per vehicle for accurate results; this self-measuring bottle simplifies dosing.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

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When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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