--- product_id: 2380101 title: "Bar's Leaks Jack Oil with Stop Leak - 12.5 oz" brand: "bar's leaks" price: "€ 18.12" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.be/products/2380101-bars-leaks-jack-oil-with-stop-leak-12-5-oz store_origin: BE region: Belgium --- # Non-corrosive & clog-free Works in all jacks & plows Stops leaks fast Bar's Leaks Jack Oil with Stop Leak - 12.5 oz **Brand:** bar's leaks **Price:** € 18.12 **Availability:** ✅ In Stock ## Summary > 🛠️ Stop leaks before they stop you — power up your projects with confidence! ## Quick Answers - **What is this?** Bar's Leaks Jack Oil with Stop Leak - 12.5 oz by bar's leaks - **How much does it cost?** € 18.12 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/2380101-bars-leaks-jack-oil-with-stop-leak-12-5-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 - • **Durability Boost:** Non-corrosive, non-clogging, and non-foaming formula ensures long-lasting hydraulic performance. - • **Trusted Engineering:** Developed by top chemical engineers for maximum effectiveness and safety. - • **Cost-Saving Solution:** Avoid expensive repairs and downtime by restoring old jacks and protecting new ones. - • **Leak-Proof Confidence:** Seals and prevents hydraulic jack and snow plow leaks with precision. - • **Universal Compatibility:** Perfectly blends with all petroleum, mineral, and synthetic fluids across floor and bottle jacks. ## Overview Bar's Leaks Jack Oil with Stop Leak is a 12.5 oz hydraulic fluid additive designed to stop and prevent leaks in all floor and bottle jacks as well as snow plow fluids. Its non-corrosive, non-clogging, and non-foaming formula is compatible with petroleum-based, mineral oil, and synthetic fluids, providing a reliable, cost-effective solution to extend the life of hydraulic equipment and avoid costly repairs. ## Description Picture This: You’Re About To Start A Huge Weekend Project, Or If You Live In Colder Regions, Maybe Get Out There And Plow The Latest Snowstorm. You Check Your Hydraulic Jack (Or Snow Plow) But Notice It’S Been Leaking. Just What You Needed, Right? Wrong. Nobody Likes Being In A Situation Like This, And That’S Why We Created Bar’S Leaks Jack Oil With Stop Leak. Rather Than Forcing You To Spend Time And Money To Get Your Snow Plow Professionally Repaired, Bar’S Leaks Offers An Attractive Alternative: Hydraulic Jack Oil That Stops Leaks And Prevents You From Investing Time And Money Into A More Expensive Solution. It Is The Fastest, Safest Way To Bring Your Hydraulic Jack Or Plow Back To Life.The Bar’S Leaks Jack Oil With Stop Leak Is Specially Designed To Stop Seal And O-Ring Leaks Caused By Normal Jack Wear And Age. If You Find Yourself Having To Add Oil To Your Jack, It Most Likely Has A Leak. This Product Renews Old Jacks And Prevents Leaks And Seepage On Newer Jacks. Not To Mention, It Mixes With All Approved Hydraulic Jack Oils As Well As Snow Plow Fluids, It Works In All Floor And Bottle Jacks, And It’S Non-Corrosive, Non-Clogging And Non-Foaming.All Of Our Leak Repair Solutions Are The Result Of Careful Research, Design And Development Processes Undertaken By Our Team Of Top-Flight Chemical Engineers. Each Bar’S Leaks Product, Our Jack Oil With Top Leak Included, Is Designed To Represent The Utmost In Usability, Affordability And Effectiveness. When You Choose Bar’S Leaks For Your Jack Oil And Other Stop Leak Needs, You Can Always Count On Getting Performance That Works At A Price That Saves You Money.Keep A Bottle Of This Handy In Your Garage And You Can Rest Assured You’Ll Be Able To Quickly And Safely Get Your Show Back On The Road. No Worries, No Hassle. Review: Easy choice for quality and value. - Refilled a hydraulic pump and there were no issues. No new leaks or viscosity issues. Thickness and smell and use in a 10-ton press is going just as expected - no problems. Review: Quickly cured bad clutch master cylinder! - The clutch master cylinder failed on my 2012 Ford Focus. It leaked internally, causing the pedal to sink to the floor without disengaging the clutch, but with no loss of brake fluid. The same reservoir is used on the Focus to hold fluid for the brakes and the clutch. Bars Leaks jack oil with stop leak must NOT be put into the brake system reservoir because it can affect the boiling point of brake fluid and the viscosity thereby causing problems with the ABS system. Also, it will not mix with brake fluid. My solution was to segregate the clutch hydraulics from the brake system. I purchased from desertcart a Lefossi universal reservoir for motorcycle brake systems. I mounted this reservoir on the side of the battery box. I also bought from desertcart some 150 cc plastic syringes for fluid transfer. I cut the fluid line from the brake master cylinder reservoir to the clutch master cylinder fluid intake nipple. I plugged the output nipple on the brake master cylinder reservoir. I ran a hose from the remaining section of the fluid supply line to the clutch master cylinder up to the Lefossi reservoir. I then vacuumed out the remaining residual brake fluid in the clutch system using a manual brake vacuum pump which can be purchased from desertcart, by connecting the vacuum pump to the clutch bleed nipple. After that, I used the syringe to pump the Bars Leak jack fluid into the clutch bleed nipple. This filled the clutch hydraulic system and automatically bled the system of all air. I pumped in just enough jack fluid to fill the Lefossi reservoir (this is called reverse injection). Then I closed the clutch bleed nipple. The result, it took about 15 hours or so for the Bars Leak jack oil to do its magic and then the clutch worked perfectly! Bars company claims you should allow up to 3 days for the oil to recondition the seals of a hydraulic jack or snow plow system. They also insist that there are no solvents in the product which can ultimately dissolve the seals. Bars company does not specifically recommend the jack oil for use in clutch systems, and they caution against putting this stuff into the brake fluid in the brake reservoir. It can ruin your brakes, but I got great results with my clutch system after I segregated the brake hydraulics from the clutch hydraulics, and I saved almost $500! ## Features - Stops Current Leaks And Prevents Future Leaks - Works In All Floor And Bottle Jacks And With All Snow Plow Fluids - Non-Corrosive, Non-Clogging & Non-Foaming - Compatible With All Petroleum Based, Mineral Oil, And Synthetic Fluids ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002KKIBY | | Best Sellers Rank | #16,305 in Automotive ( See Top 100 in Automotive ) #335 in Diagnostic, Test & Measurement Tools | | Brand Name | Bar's Leaks | | Container Type | Bottle | | Customer Reviews | 4.7 4.7 out of 5 stars (3,727) | | Global Trade Identification Number | 00046087000441 | | Included Components | Jack oil | | Item Form | Liquid | | Item Type Name | Bar's Leaks Jack Oil with Stop Leak - 12.5 oz | | Item Weight | 12.64 ounces | | Liquid Volume | 12.5 Fluid Ounces | | Manufacturer | Bar's Leaks | | Material | Plastic | | Recommended Uses For Product | Anti-wear | | Specific Uses For Product | Repairing and maintaining hydraulic jacks and snow plow equipment | | UPC | 046087000441 | | Unit Count | 370 Milliliters | | Viscosity | 10w | | Warranty Description | Warranty | ## Product Details - **Brand:** Bar's Leaks - **Item Weight:** 12.64 ounces - **Liquid Volume:** 12.5 Fluid Ounces - **Material:** Plastic - **Package Information:** Bottle ## Images ![Bar's Leaks Jack Oil with Stop Leak - 12.5 oz - Image 1](https://m.media-amazon.com/images/I/61ZLB89AjpL.jpg) ## Questions & Answers **Q: I don't have any leaks on my 3 tons Pittsburg car jack. Can I still use/fill this oil as a hydraulic oil?** A: Yes you can it’s just a thicker viscosity to help prevent a leak. Any hydraulic oil can be used also. **Q: What is the ISO viscosity grade?** A: This product is around a 5w oil in viscosity. The ISO standards for the viscosity of this product are located on our SDS sheet. I am providing the link below. https://barsleaks.com/wp-content/uploads/2019/07/HJ12-SDS-1.pdf 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: Is this an addative to regular oil or do you fill your entire jack with?** A: Bar’s Leaks Jack Oil with Stop Leak is engineered to stop seal and o-ring leaks caused by normal jack wear and age. If you regularly have to add oil to your jack (and snow plow hydraulics), you’re probably dealing with a leak. This formula renews old jacks and light hydraulics and prevents leaks and seepage on new jacks and hydraulics. Not to mention, it mixes with all approved hydraulic jack oils as well as snow plow fluids, and works in all floor and bottle jacks. It’s 100% safe: non-corrosive, non-clogging and non-foaming. DIRECTIONS Clean area around filler cap. Fill jack to proper level. Do not overfill. Cycle jack by lifting and releasing a few times to release any air caught in system. Leaks usually stop in a few days of normal use. If leak continues, repair may be required. When using the HJ12 (Hydraulic Jack Oil with Stop Leak) top off fluid level as needed. For larger systems use one bottle for every 2 quarts of oil capacity. Do not fill entire jack with HJ12 Fluid. 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: Can I use at outboard tilt engines** A: We would need a bit more information on the operation of the system and where you would be adding the fluid. If adding to a closed loop hydraulic pump that lifts and lowers the motor then yes you can use this product. Please contact our Technical Service Professionals at 800-345-6572 or if you would prefer you can use the contact us page on our website. https://barsleaks.com/contact-us/ ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy choice for quality and value. *by M***E on November 13, 2025* Refilled a hydraulic pump and there were no issues. No new leaks or viscosity issues. Thickness and smell and use in a 10-ton press is going just as expected - no problems. ### ⭐⭐⭐⭐⭐ Quickly cured bad clutch master cylinder! *by P***O on March 16, 2023* The clutch master cylinder failed on my 2012 Ford Focus. It leaked internally, causing the pedal to sink to the floor without disengaging the clutch, but with no loss of brake fluid. The same reservoir is used on the Focus to hold fluid for the brakes and the clutch. Bars Leaks jack oil with stop leak must NOT be put into the brake system reservoir because it can affect the boiling point of brake fluid and the viscosity thereby causing problems with the ABS system. Also, it will not mix with brake fluid. My solution was to segregate the clutch hydraulics from the brake system. I purchased from Amazon a Lefossi universal reservoir for motorcycle brake systems. I mounted this reservoir on the side of the battery box. I also bought from Amazon some 150 cc plastic syringes for fluid transfer. I cut the fluid line from the brake master cylinder reservoir to the clutch master cylinder fluid intake nipple. I plugged the output nipple on the brake master cylinder reservoir. I ran a hose from the remaining section of the fluid supply line to the clutch master cylinder up to the Lefossi reservoir. I then vacuumed out the remaining residual brake fluid in the clutch system using a manual brake vacuum pump which can be purchased from Amazon, by connecting the vacuum pump to the clutch bleed nipple. After that, I used the syringe to pump the Bars Leak jack fluid into the clutch bleed nipple. This filled the clutch hydraulic system and automatically bled the system of all air. I pumped in just enough jack fluid to fill the Lefossi reservoir (this is called reverse injection). Then I closed the clutch bleed nipple. The result, it took about 15 hours or so for the Bars Leak jack oil to do its magic and then the clutch worked perfectly! Bars company claims you should allow up to 3 days for the oil to recondition the seals of a hydraulic jack or snow plow system. They also insist that there are no solvents in the product which can ultimately dissolve the seals. Bars company does not specifically recommend the jack oil for use in clutch systems, and they caution against putting this stuff into the brake fluid in the brake reservoir. It can ruin your brakes, but I got great results with my clutch system after I segregated the brake hydraulics from the clutch hydraulics, and I saved almost $500! ### ⭐⭐⭐⭐⭐ Works as advertised and now my hydraulic jack does again, too. *by J***Y on October 5, 2025* This product worked exactly as advertised and refilled my aging hydraulic automobile jack, just fine. I never noticed leakage. However, after many years of use, I suddenly couldn't raise my tire fully off the ground for rotation or replacement any more with my hydraulic jack as it used to do easily by several inches. After researching this problem on the web, I realized I needed this product or something similar. I only needed a few ounces to completely refill my jack and return it to proper working order, so I have most of the bottle unused, in case I need to add anymore in the future. The included reclosable cap made an excellent refilling funnel when I unscrewed it from the bottle, and inserted it in my jack's oil fill hole. Highly recommended. ## Frequently Bought Together - Bar's Leaks Jack Oil with Stop Leak - 12.5 oz - 16PCS Floor Jack Repair Sealing Tool Kit,3 Ton Floor Jack O Ring Kit with Oil Filler Plug for Improved Sealing of Hydraulic Systems,Standard Car Accessories Floorr Jack Parts - Johnsen's 5594 Hydraulic Jack Oil - 32 oz. --- ## 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.be/products/2380101-bars-leaks-jack-oil-with-stop-leak-12-5-oz](https://www.desertcart.be/products/2380101-bars-leaks-jack-oil-with-stop-leak-12-5-oz) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-04-22*