--- product_id: 501424570 title: "1" brand: "tsi supercool" price: "BZ$309" currency: BZD in_stock: true reviews_count: 5 category: "Tsi Supercool" url: https://belize.desertcart.com/products/501424570-1 store_origin: BZ region: Belize --- # Detectable with any U/V light source Synthetic U/V dye for precise leak detection 1-ounce dose per vehicle for easy use 1 **Brand:** tsi supercool **Price:** BZ$309 **Availability:** ✅ In Stock ## Summary > 🕵️‍♂️ Glow Up Your Engine Diagnostics—Catch Leaks Before They Catch You! ## Quick Answers - **What is this?** 1 by tsi supercool - **How much does it cost?** BZ$309 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [belize.desertcart.com](https://belize.desertcart.com/products/501424570-1) ## Best For - tsi supercool enthusiasts ## Why This Product - Trusted tsi supercool brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Application:** Self-measure bottle ensures the perfect 1-ounce dose every time—no guesswork. - • **Pinpoint Leaks Instantly:** Synthetic U/V dye reveals hidden cooling system leaks with unmatched accuracy. - • **Trusted by Pros & DIYers:** Top-rated with 4.6 stars and thousands of vehicles saved from costly repairs. - • **Mess-Free & Water Soluble:** Bright purple formula rinses clean, leaving no residue or hassle behind. - • **Universal U/V Compatibility:** Works seamlessly with any U/V light—no special equipment needed. ## Overview TSI Supercool RD8 Radiator Dye is a synthetic, purple U/V leak detection dye designed for water-cooled engines. It is easily detectable with any U/V light and comes in a convenient 8-ounce self-measure bottle, requiring just 1 ounce per vehicle. Highly rated for its accuracy and ease of use, it helps professionals and enthusiasts quickly identify cooling system leaks, preventing costly damage. ## Description TSI Supercool RD8 Radiator Dye - 8-Ounce - Self Measure Bottle is a Synthetic U/V Leak Detection Dye that is engineered to quickly find system leaks. It is detectable with any U/V light. It is conveniently designed for easy measuring, use 1-Ounce per vehicle. Review: Works well. - Works great. I would rather not use it because is is colorful enough even without UV that I think of it as messy, and drain and flush after finding and fixing leaks, but maybe I add too much, or maybe I should just not worry about that and rinse everything when done. It is quite water soluble and rinses clean off. My son calls it "predator blood", looks the same. Definitely helps finding obscure leaks on messy engines. Be sure to put it in the radiator. If put into an overflow tank, especially a non pressurized type, it may require a few heat cycles to transfer enough to where it matters to be useful. Obviously, won't help with a head gasket leak to the combustion chamber, unless you look with a borescope, maybe after letting it sit pressurized a while. Head gasket leak to crankcase (oil contamination), you shouldn't need this stuff for. The milkshake is perfectly fine for that. Review: Liquid is brown which threw me off. Once mixed it glows - Works great ## Features - Includes Synthetic U/V Leak Detection Dye - Offers to Quickly Find Cooling System Leaks - Features a Formula that is Detectable with any U/V Light - Use 1-Ounce Per Vehicle - U/V Leak Detection Dye used to detect leaks in water cooled engines ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B008PKWEHY | | Best Sellers Rank | 9,156 in Automotive ( See Top 100 in Automotive ) 5,160 in Vehicle Oils & Fluids | | Brand | TSI Supercool | | Brand Name | TSI Supercool | | Colour | Purple | | Compatible Material | Coton | | Compatible material | Coton | | Customer Reviews | 4.6 out of 5 stars 128 Reviews | | Global Trade Identification Number | 00672264001743 | | Included Components | Radiator Dye - 8-Ounce - Self Measure Bottle | | Item Form | Liquid | | Item Weight | 0.6 Pounds | | Item form | Liquid | | Item weight | 0.6 Pounds | | Manufacturer | TSI Supercool | | Manufacturer Part Number | RD8 | | Model Number | RD8 | | Number of Items | 1 | | UPC | 672264001743 | | Unit Count | 1.0 count | | Unit count | 1.0 count | ## Product Details - **Colour:** Silver - **Brand:** TSI Supercool - **Item weight:** 0.6 Pounds - **Item form:** Liquid - **Compatible material:** Metal ## Images ![1 - Image 1](https://m.media-amazon.com/images/I/51lTSxJELpL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works well. *by J***. on 17 April 2026* Works great. I would rather not use it because is is colorful enough even without UV that I think of it as messy, and drain and flush after finding and fixing leaks, but maybe I add too much, or maybe I should just not worry about that and rinse everything when done. It is quite water soluble and rinses clean off. My son calls it "predator blood", looks the same. Definitely helps finding obscure leaks on messy engines. Be sure to put it in the radiator. If put into an overflow tank, especially a non pressurized type, it may require a few heat cycles to transfer enough to where it matters to be useful. Obviously, won't help with a head gasket leak to the combustion chamber, unless you look with a borescope, maybe after letting it sit pressurized a while. Head gasket leak to crankcase (oil contamination), you shouldn't need this stuff for. The milkshake is perfectly fine for that. ### ⭐⭐⭐⭐⭐ Liquid is brown which threw me off. Once mixed it glows *by C***N on 23 November 2025* Works great ### ⭐⭐⭐⭐⭐ Works great *by G***R on 23 June 2026* Was skeptical at first but used it and it makes it so much easier to find a leak and most of the time you dont even need the flashlight to spot it. Color is nice and bright to see definitely worth the money id buy again. Worked great for us even though the radiator is shot. ## Frequently Bought Together - TSI Supercool RD8 Radiator Coolant Water Based U/V Leak Detection Dye (Self Measure Bottle), Purple, 8-Ounce Bottle - UV Fluid Leak Detection Dye, 8 Oz - REALHUNLEE Air Conditioner UV Dye Leak Detector, Pro Auto Oil AC UV Dye Leak Test Detection Tool Kit 68 LED A/C UV Flashlight Detector with Protective Glasses --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://belize.desertcart.com/products/501424570-1](https://belize.desertcart.com/products/501424570-1) --- *Product available on Desertcart Belize* *Store origin: BZ* *Last updated: 2026-08-26*