--- product_id: 13143690 title: "Lisle 75630 Test Fluid" brand: "lisle" price: "€ 27.07" currency: EUR in_stock: true reviews_count: 13 category: "Lisle" url: https://www.desertcart.at/products/13143690-lisle-75630-test-fluid store_origin: AT region: Austria --- # Color-change indicator 16 fl oz precision volume Compatible with Lisle 75500 Detector Lisle 75630 Test Fluid **Brand:** lisle **Price:** € 27.07 **Availability:** ✅ In Stock ## Summary > 🔍 Catch leaks before they catch you – stay ahead with Lisle 75630! ## Quick Answers - **What is this?** Lisle 75630 Test Fluid by lisle - **How much does it cost?** € 27.07 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/13143690-lisle-75630-test-fluid) ## Best For - lisle enthusiasts ## Why This Product - Trusted lisle brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Optimal Volume:** Generous 16 oz bottle ensures multiple tests without frequent repurchasing. - • **Trusted Accuracy:** Proven reliability with 4.5-star rating from over 300 professionals. - • **Instant Leak Detection:** Fluid shifts from blue to yellow on combustion gas exposure for rapid diagnostics. - • **Seamless Compatibility:** Designed specifically for Lisle 75500 Combustion Leak Detector for flawless integration. - • **Cost-Effective Maintenance:** Save time and money by catching leaks early before costly engine damage. ## Overview Lisle 75630 Test Fluid is a 16 oz liquid designed to detect combustion leaks by changing color from blue to yellow when exposed to combustion gases. It works exclusively with the Lisle 75500 Combustion Leak Detector, providing a reliable, cost-effective solution for early engine leak diagnostics favored by automotive professionals. ## Description Detects Combustion Leaks on Engines. Use the leak detector fluid with the Lisle 75500 Combustion Leak Detector. Indicating fluid changes from blue to yellow when exposed to combustion gases in the radiator. Contains 16 fluid oz. Review: Good product - Works as intended. Review: Direct Replacement for the Original Fluid from my Kit (bought elsewhere) - Glad I found this on desertcart. I haven't opened the bottle yet, but if it works as good as the stuff that came with my combustion leak kit (which I expect it will, since the bottles are identical), it will work like a charm and at half the price of ordering a replacement from the catalog. Make sure to test your results. That is, if a combustion leak ISN'T present judging by the lack of color change, exhale into the tube and see if the CO2 in your breath is enough to cause the blue to turn greenish-yellow. If not, then the chemical itself is faulty. The process I use is to let the car idle for about 5-10 minutes with the hood open, then get in and raise the RPMs to about 1200-1500 while in Park or in Neutral with the parking brake engaged. Then, I get out, open up the expansion tank cap, and a vacuum line to the engine, and use the vacuum to draw whatever gas is present in the expansion tank into my testing kit tube. I let it do that for about 2 minutes - if the color doesn't change, you're good to go. ## Features - Detects Combustion Leaks on Engines. - Use the leak detector fluid with the Lisle 75500 Combustion Leak Detector. - Indicating fluid changes from blue to yellow when exposed to combustion gases in the radiator. - Contains 16 fluid oz. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000I17Z8Q | | Best Sellers Rank | #22,900 in Automotive ( See Top 100 in Automotive ) #18 in Fuel Leak Detectors #513 in Diagnostic, Test & Measurement Tools | | Brand Name | Lisle | | Container Type | Bottle | | Customer Reviews | 4.5 4.5 out of 5 stars (313) | | Global Trade Identification Number | 00083045756309 | | Included Components | Fluid | | Item Form | Liquid | | Item Type Name | COMBUSTION LEAK INDICATING FLUID | | Item Weight | 0.65 Pounds | | Manufacturer | Lisle | | UPC | 083045756309 | | Unit Count | 16.0 Fluid Ounces | | Warranty Description | Lifetime warranty does not cover abuse | ## Product Details - **Brand:** Lisle - **Item Form:** Liquid - **Item Weight:** 0.65 Pounds - **Manufacturer:** Lisle - **Package Information:** Bottle ## Images ![Lisle 75630 Test Fluid - Image 1](https://m.media-amazon.com/images/I/71SdNDYbJ4L.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: what pump can i use with it ? can you give me the picture of the pump , thank you** A: Try ones like this: Hopkins 10803 FloTool Transfer Pump. Takes 2 hands, but otherwise cheap and effective. Comes with a hose that connects directly without fittings. **Q: What is the difference between the diesel and gasoline combustion gas tester fluid?** A: Did not find that particular brand to work very well for diesel. Have used other brands which are combustion chamber leak detectors which work for both gas and diesel. The difference between a gas and diesel detector would be in the chemical formulation. **Q: I don't have a radiator cap on my radiator So will it work on my overflow? Or what would you recommend** A: Your car has a degas bottle. Yeah it will work on that **Q: Can it detect co2 in coolant? What is the average for success by testing?** A: Yes, it tests for carbon dioxide and carbon monoxide in your coolant. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good product *by D***. on November 23, 2025* Works as intended. ### ⭐⭐⭐⭐⭐ Direct Replacement for the Original Fluid from my Kit (bought elsewhere) *by D***3 on March 26, 2018* Glad I found this on Amazon. I haven't opened the bottle yet, but if it works as good as the stuff that came with my combustion leak kit (which I expect it will, since the bottles are identical), it will work like a charm and at half the price of ordering a replacement from the catalog. Make sure to test your results. That is, if a combustion leak ISN'T present judging by the lack of color change, exhale into the tube and see if the CO2 in your breath is enough to cause the blue to turn greenish-yellow. If not, then the chemical itself is faulty. The process I use is to let the car idle for about 5-10 minutes with the hood open, then get in and raise the RPMs to about 1200-1500 while in Park or in Neutral with the parking brake engaged. Then, I get out, open up the expansion tank cap, and a vacuum line to the engine, and use the vacuum to draw whatever gas is present in the expansion tank into my testing kit tube. I let it do that for about 2 minutes - if the color doesn't change, you're good to go. ### ⭐⭐⭐⭐⭐ Combine with OEMTOOLS 27145 Combustion Leak Detector, which comes with a case for the tester. *by C***E on July 30, 2023* Delivery time okay. Did it's job. I was looking at the Block Tester BT-500 which provided the tester and fluid. But for the same price, I bought this fluid and the OEMTOOLS 27145 Combustion Leak Detector, which comes with a case for the tester for the same price. I confirmed I had a head gasket leak (light green rather than color changing all the way to yellow). After research on Youtube, I went with K-Seal Pour and Go. Took about 3x cycles of running the car with radiator at operating temperature, and then poof, my Check Engine light went out. From reviews, it seems you will get at least 10k-20k miles out of it, some claim never a problem again. If the problem does reappear, I will probably then try the K-Seal Ultimate gasket seal. ## Frequently Bought Together - Lisle 75630 Test Fluid - OEMTOOLS 37145 Combustion Leak Detector, Plastic and Rubber Tester for Engine Block Leaks, Automotive Blown Head Gasket Test, Block Test Kit --- ## 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://www.desertcart.at/products/13143690-lisle-75630-test-fluid](https://www.desertcart.at/products/13143690-lisle-75630-test-fluid) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-04-22*