--- product_id: 278062427 title: "HJ12 Jack Oil with Stop Leak - 12.5oz" brand: "bar's leaks" price: "S$24" currency: SGD in_stock: true category: "Bar's Leaks" url: https://www.desertcart.sg/products/278062427-hj12-jack-oil-with-stop-leak-12-5oz store_origin: SG region: Singapore --- # Stops leaks & extends oil drain intervals SAE J300 Viscosity Grade 12 for extreme temps 12.5oz premium synthetic oil HJ12 Jack Oil with Stop Leak - 12.5oz **Brand:** bar's leaks **Price:** S$24 **Availability:** ✅ In Stock ## Summary > 🛠️ Seal the deal with HJ12 – because your engine deserves the best! ## Quick Answers - **What is this?** HJ12 Jack Oil with Stop Leak - 12.5oz by bar's leaks - **How much does it cost?** S$24 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/278062427-hj12-jack-oil-with-stop-leak-12-5oz) ## 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 - • **Extended Engine Life:** Reduces wear and corrosion, extending oil drain intervals and maintenance cycles. - • **Trusted by Thousands:** Rated 4.7 stars by over 3,600 users—join the pros who never compromise on quality. - • **Compact & Durable Packaging:** 12.5oz bottle designed for easy storage and long-lasting use without spills. - • **Precision-Engineered Formula:** Delivers superior leak-stopping power to keep your engine running flawlessly. - • **Extreme Temperature Performance:** SAE J300 Grade 12 viscosity ensures reliable protection in all weather conditions. ## Overview HJ12 Jack Oil with Stop Leak is a 12.5oz synthetic oil formulated to stop leaks, reduce engine wear, and protect against corrosion. With SAE J300 viscosity grade 12, it performs reliably in extreme temperatures and extends oil drain intervals. Trusted by thousands and packaged compactly for easy use, it’s a must-have for proactive vehicle maintenance. ## Description Designed as per the prevailing industry standards, it scores high on the aspect of utility. The quality material used in its construction makes it durable. ## Features - Designed to perfection - Compact construction - Easy to maintain - It comes in a safe and secure packaging ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002KKIBY | | Best Sellers Rank | #42,547 in Automotive ( See Top 100 in Automotive ) #570 in Automotive Oils | | Brand Name | Bar's Leaks | | Container Type | Bottle | | Customer Reviews | 4.7 4.7 out of 5 stars (3,635) | | Global Trade Identification Number | 00046087000441 | | Item Form | Oil | | Item Weight | 0.79 Pounds | | Liquid Volume | 12.5 Fluid Ounces | | Manufacturer | Bar's Leaks | | Material | Synthetic | | Model Number | HJ12 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | HJ12 | | Recommended Uses For Product | packaging | | SAE J300 Viscosity Grade | 12 | | Specific Uses For Product | [INF] Inferred: Reduce wear, Extend oil drain intervals, Operate in extreme temperatures, Protect against corrosion | | UPC | 046087000441 | | Unit Count | 12.5 Milliliters | ## Product Details - **Brand:** Bar's Leaks - **Item weight:** 0.79 Pounds - **Liquid volume:** 12.5 Fluid Ounces - **Material:** Synthetic - **Package information:** Bottle ## Images ![HJ12 Jack Oil with Stop Leak - 12.5oz - 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/ ## 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.sg/products/278062427-hj12-jack-oil-with-stop-leak-12-5oz](https://www.desertcart.sg/products/278062427-hj12-jack-oil-with-stop-leak-12-5oz) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-10-12*