--- product_id: 8435812 title: "Bar's Leaks Cooling System Radiator Stop Leak 16.9 oz." brand: "bar's leaks" price: "76 zł" currency: PLN in_stock: true reviews_count: 13 category: "Bar's Leaks" url: https://www.desertcart.pl/products/8435812-bars-leaks-cooling-system-radiator-stop-leak-16-9-oz store_origin: PL region: Poland --- # Easy reservoir application Lowers engine water temp Seals multiple leak types Bar's Leaks Cooling System Radiator Stop Leak 16.9 oz. **Brand:** bar's leaks **Price:** 76 zł **Availability:** ✅ In Stock ## Summary > 🛠️ Stop leaks before they stop you — drive worry-free! ## Quick Answers - **What is this?** Bar's Leaks Cooling System Radiator Stop Leak 16.9 oz. by bar's leaks - **How much does it cost?** 76 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/8435812-bars-leaks-cooling-system-radiator-stop-leak-16-9-oz) ## Best For - bar's leaks enthusiasts ## Why This Product - Trusted bar's leaks brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Simple DIY Fix:** Add directly to coolant reservoir—no mechanic needed - • **Cool & Controlled:** Effectively lowers engine water temperature for safer drives - • **Trusted by Thousands:** 4.3-star rating from over 3,700 satisfied users - • **Leak-Proof Confidence:** Seals radiator, freeze plug, gasket & heater core leaks fast - • **Cost-Effective Solution:** Avoid expensive repairs with one affordable bottle ## Overview Bar's Leaks Liquid Aluminum Stop Leak is a powerful, easy-to-use additive designed to seal radiator, freeze plug, gasket, and heater core leaks. It helps lower engine water temperature, preventing overheating and costly repairs. Trusted by thousands with a 4.3-star rating, this 16.9 oz bottle is perfect for quick, effective maintenance without a mechanic. ## Description AUTO_PART Review: It worked perfectly for me! - I just bought the Bar's Leaks Liquid Aluminum Stop Leak and I’m truly sastified. After noticing a coolant leak from my car on my driveway and when I got to work, I was afraid that i might break down on the highway going to work or going home from work. At first, I was skeptical about using a stop leak product since I’ve never used one before nor did I hear anyone give me feedback about their experience with any leak but this one honestly exceeded my expectations. I am 100% happy with the results, I haven’t seen any leaks. I will top my coolant reservoir with coolant and see if the reservoir itself will decrease in coolant since I haven’t seen any drips under my car. It was straightforward, add the bottle into the reservoir since I didn’t have access directly to the radiator on my car. It has instructions on the bottle on how much and where to add the liquid to. My engine temperature is normal when driving and I’ve never seen it go up ever since adding this leak liquid. I can say I’m satisfied and for reference, I added full bottle into my reservoir and my vehicle is a fairly newer Jeep Grand Cherokee! Review: Good product - Worked great and great price ## Features - Bar's Leaks Liquid Aluminum Stop Leak seals radiator leaks. Seals freeze plug leaks. Repairs gasket leaks and heater core leaks. Lowers water temperature. - Seals radiator leaks - Seals freeze plug leaks - Repairs gasket leaks ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B002696FA2 | | Brand Name | Bar's Leaks | | Container Type | Can | | Customer Reviews | 4.3 4.3 out of 5 stars (3,758) | | Global Trade Identification Number | 00046087011867 | | Included Components | 1 Bottle Rislone 4405 Engine Oil Supplement, 11oz | | Item Form | item_form | | Item Type Name | Liquid Aluminum Radiator and Heater Core Stop Leak | | Item Weight | 0.8 Pounds | | Liquid Volume | 16.9 Fluid Ounces | | Manufacturer | Bar's Leaks | | Material | Plastic | | Recommended Uses For Product | Fleet and plant maintenance. | | Specific Uses For Product | Fleet and plant maintenance. | | UPC | 046087011867 | | Warranty Description | No | ## Product Details - **Brand:** Bar's Leaks - **Item Weight:** 0.8 Pounds - **Liquid Volume:** 16.9 Fluid Ounces - **Material:** Plastic - **Package Information:** Can ## Images ![Bar's Leaks Cooling System Radiator Stop Leak 16.9 oz. - Image 1](https://m.media-amazon.com/images/I/710LVf+KX5S.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: My radiator leaking from the seam. Slightly overheating. Will this seal at the seam?** A: It should,depending on how big the leak/crack is,the one on my semi truck was dripping big,half a gallon a day,I was worried bc that s a $2,000.00 repair,I bought it not expecting any results,since I had previously used Bars leak (the small silver bottle) and didn t work,so this was a prayer and a last hope, 5,000 mls later and not a leak,not extra coolant added,it is liquid aluminum,so it bonds to wherever the leak is and forms a sealing coat...I think of it as welding from the inside...I hope it works for you as it did for me,it really was an answer to prayer...I know I m a bit dramatic but it was.PS,try to follow recommended amount or as close as recommended,not much less and not much more,I used 2 bottles on a 11 gal radiator.God bless. **Q: can it be used in a Tahoe plastic tank** A: i used it in my volvo which has a plastic expansion tank and no problems. it won't fix big leaks but if you're losing just a little coolant over time and can't find the leak this is the stuff to use! **Q: My volkswagen golf gti 2018 doesn’t have a radiator cap can i still put it in a coolant reservoir to seal my radiator leak?** A: If direct access to radiator is not available, install in overflow tank. Please ensure overflow is pressurized before adding. DIRECTIONS Allow engine to cool. Make sure engine is cool enough so radiator cap can be safely removed. Shake well. Pour Bar’s Leaks Liquid Aluminum directly into radiator. One bottle treats systems up to 4 gallons. Use 1/2 bottle in 3 and 4 cylinder engines. TIP: If direct access to radiator is not available, install in overflow tank. Fill radiator and overflow tank to proper level and reinstall radiator cap. Drive/idle engine for 15 to 20 minutes. If leak continues, second application may be required or mechanical attention is needed. For severe leaks, like a blown head gasket, it is recommended to use Bar’s Leaks Head Gasket Fix or Blown Head Gasket Repair. Leave Bar’s Leaks Liquid Aluminum in cooling system for continued protection. If you have any other technical questions, feel free to contact our Technical Service Professionals at 800-345-6572 or if you would prefer you can use the contact us page on our website. **Q: will this work on the head also?** A: Try it...it's inexpensive. Whether it works depends on the specifics of your problem. I tried it on a 4 cylinder BMW with a new head and profile gasket and a slow leak. It worked great. ## Customer Reviews ### ⭐⭐⭐⭐⭐ It worked perfectly for me! *by A***Q on January 13, 2025* I just bought the Bar's Leaks Liquid Aluminum Stop Leak and I’m truly sastified. After noticing a coolant leak from my car on my driveway and when I got to work, I was afraid that i might break down on the highway going to work or going home from work. At first, I was skeptical about using a stop leak product since I’ve never used one before nor did I hear anyone give me feedback about their experience with any leak but this one honestly exceeded my expectations. I am 100% happy with the results, I haven’t seen any leaks. I will top my coolant reservoir with coolant and see if the reservoir itself will decrease in coolant since I haven’t seen any drips under my car. It was straightforward, add the bottle into the reservoir since I didn’t have access directly to the radiator on my car. It has instructions on the bottle on how much and where to add the liquid to. My engine temperature is normal when driving and I’ve never seen it go up ever since adding this leak liquid. I can say I’m satisfied and for reference, I added full bottle into my reservoir and my vehicle is a fairly newer Jeep Grand Cherokee! ### ⭐⭐⭐⭐⭐ Good product *by D***R on February 28, 2026* Worked great and great price ### ⭐⭐⭐⭐ I was hoping this would reduce the leak rate further but things got worse; it went back to how bad it used ... *by J***R on October 2, 2015* After use the leak increased in speed. I can not be sure this was related to that but it did happen at the same time. I drove 2 hours after use. I do not think the radiator itself had any leaks and I put in a pump and new hose last year which helped greatly but didn't stop the slow leaking. A rate of every 3 months; I was hoping this would reduce the leak rate further but things got worse; it went back to how bad it used to be. Like I said, I don't think I can link the problem to this product, which is simply metal flakes in liquid which hopefully get jammed into leak. What I did notice is that the level never goes down when driving but after sitting a while the level goes down; so this could be helping during operation but when the pressure drops this stuff no longer plugs the leak so it still is leaking. The fact it is worse I do not think is connected. That is my theory on what is going wrong. I think this product is a clever solution to mitigate leaks but unlikely to solve problems - which is the expectation I had when I bought it. I may buy it again. ## Frequently Bought Together - Bar's Leaks Cooling System Radiator Stop Leak 16.9 oz. - PEAK 50/50 Prediluted Antifreeze and Coolant for All Engine Cooling Systems - Bar's Leaks 1109 Liquid Copper Block Seal, Intake and Radiator Stop Leak, 18 oz. | One Step, Safe for All Cooling Systems --- ## 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.pl/products/8435812-bars-leaks-cooling-system-radiator-stop-leak-16-9-oz](https://www.desertcart.pl/products/8435812-bars-leaks-cooling-system-radiator-stop-leak-16-9-oz) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-23*