{"product_id":"bars-leaks-transmission-fix-additive-11-5-oz-stops-leaks-restores-seals-improves-shift-feel","title":"Bar's Leaks Transmission Fix additive 11.5 oz – stops leaks, restores seals \u0026 improves shift feel","description":"\u003cp\u003e\u003cstrong\u003eBar's Leaks 1415 Transmission Fix is a synthetic-blend additive designed to stop and prevent transmission leaks while restoring seal flexibility and improving shift feel.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your vehicle’s transmission is showing signs of leaking, slipping, hard shifts, or excess noise, this concentrated 11.5 oz treatment works with automatic, manual, CVT and DCT systems to refresh seals, reduce wear, and help clean internal surfaces. Formulated for both domestic and import vehicles, the product blends seal conditioners, anti-wear agents and detergents to address common performance and sealing problems without the need for parts replacement in many cases.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this product stop existing leaks and prevent new ones?\u003c\/h3\u003e\n\n\u003cp\u003eThe formula contains seal-softening and conditioning ingredients that penetrate rubber and elastomer components to restore pliability and close shrinkage gaps. By rejuvenating drying seals, it reduces seepage paths and helps maintain the improved condition over time when used as directed.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eContains seal conditioners to swell and soften hardened gaskets and O-rings.\u003c\/li\u003e\n  \u003cli\u003eCompatible with typical transmission fluids so it mixes easily into system oil.\u003c\/li\u003e\n  \u003cli\u003eCan be used proactively to reduce future drying and cracking of seals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it improve shifting, slipping or transmission noise?\u003c\/h3\u003e\n\n\u003cp\u003eYes — the treatment includes anti-wear and extreme-pressure additives that help enhance metal-to-metal friction properties and reduce slippage. Users often notice smoother engagement, fewer jerks, and reduced shudder as bands and clutch surfaces regain more consistent friction characteristics.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHelps control slipping, hard shifts, and shutter by restoring friction balance.\u003c\/li\u003e\n  \u003cli\u003eContains agents to reduce wear on bands and clutch plates for better shift feel.\u003c\/li\u003e\n  \u003cli\u003eMay lower certain noise sources related to fluid degradation and surface wear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan it clean internal deposits or improve fluid condition?\u003c\/h3\u003e\n\n\u003cp\u003eThe product includes detergents, dispersants and antioxidants intended to help loosen sludge and varnish on metal parts and in fluid passages. These cleaning components assist the transmission’s fluid filtration and circulation, promoting a cleaner operating environment for friction surfaces and valves.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDetergents and dispersants aid in removing sludge and varnish buildup.\u003c\/li\u003e\n  \u003cli\u003eAntioxidant ingredients help control fluid degradation at higher temperatures.\u003c\/li\u003e\n  \u003cli\u003eSupports cleaner valve bodies and passages when used as recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow much should I use and which vehicles is it suitable for?\u003c\/h3\u003e\n\n\u003cp\u003eOne 11.5 oz bottle treats systems with 7 to 11 quarts of total transmission fluid. For smaller systems (3 to 6.9 quarts), use half a bottle; for larger systems, add one bottle per each additional 9 quarts. The formulation is intended for use in automatic, manual, CVT and DCT transmissions across domestic and imported vehicles, but always follow OEM recommendations.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eDosing: full bottle for 7–11 quarts; half bottle for 3–6.9 quarts; extra bottle per 9 quarts beyond capacity.\u003c\/li\u003e\n  \u003cli\u003eWorks with most AT, MT, CVT and DCT systems—check manufacturer guidelines first.\u003c\/li\u003e\n  \u003cli\u003eSimple pour-in treatment—no special tools required; follow safety and service instructions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This Bar's Leaks Transmission Fix is aimed at car owners and technicians who want a practical, in-field remedy for common transmission seal and performance issues without immediate disassembly. It’s a good fit for vehicles showing light-to-moderate leaks, slipping, hard shifting, or fluid-related noise where a conditioning and cleaning treatment may restore proper function. For severe mechanical failures, extensive metal damage, or complete seal loss, a professional inspection and repair may still be necessary.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this safe for all automatic transmissions?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the formula is compatible with most automatic transmissions, as well as manual, CVT and DCT systems; check vehicle manufacturer recommendations before use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How quickly will I see results after adding the treatment?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Some users notice changes after a short drive; full benefits can appear after normal driving as the additive circulates and conditions seals.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Bar's Leaks","offers":[{"title":"Default Title","offer_id":55161586385239,"sku":"B08W88KDNH","price":30.59,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/bars-leaks-transmission-fix-front-label.jpg?v=1790329917","url":"https:\/\/britishgarage.co.uk\/products\/bars-leaks-transmission-fix-additive-11-5-oz-stops-leaks-restores-seals-improves-shift-feel","provider":"British Garage","version":"1.0","type":"link"}