Best Bar's Leaks in 2026

Prevents Camshaft Wear

Reduces Piston Scuffing

Increases Engine Life

Stops block leaks

Seals cracked cylinder heads and blocks

Repairs blown head gaskets

Restores lost compression

Repairs blow-by

Frees sticky rings

Product 1: This Premium Quality Synthetic Blend Works With All Types Of Motor/Engine Oil Including Regular Petroleum, High Mileage, Synthetic Blends And Fully Synthetic Formulas

Product 1: Works In All Gasoline And Diesel Engines Including Turbocharged, Eco Boost, Hybrid And Even Racing Engines, Including 3, 4, 5, 6, 8 And 10 Cylinder Engines In All Cars, Trucks, Vans And Suv'S

Product 1: Can Also Be Used In Heavy-Duty Applications As Well As Tractors, Boats, Rv'S, Motorcycles (Including Wet Clutch), Atv'S, Lawn Equipment

Repairs blown head and intake gasket leaks

Seals cracked cylinder heads and blocks

Stops heater core and radiator leaks

Repairs Blown Head And Intake Gasket Leaks

Seals Cracked Cylinder Heads And Blocks

Stops Heater Core And Radiator Leaks

Seal Conditioner – stops current and prevents future leaks by protecting and reconditioning seals.

Extreme Pressure (EP) and Anti-Wear (AW) Agents – provide excellent metal-to-metal wear protection reducing noise and gear temperatures. Our sulfur, nitrogen and phosphorus additives meet the requirements of API GL-4 and GL-5 specifications.

Friction Modifier – supplements the EP/AW additives to help reduce noise and wear. This in turn helps shifting in a manual transmission and also stops chatter in limited-slip posi-traction axles.

Stops and seals transmission fluid leaks

Works with all types of transmission fluids

Restores gasket and seals to stop transmission fluid leaks

Stops block leaks

Seals cracked cylinder heads and blocks

Repairs blown head gaskets

Stop Slipping, Rough Shifting, & Seals Fluid Leaks

Works in all Automatic, Manual, CVT, & Dual Clutch Transmissions

Reduces Noise

Stops and seals motor oil leaks

Works with all types of motor oil

Restores gaskets; seals to stop and prevent engine oil leaks

Specially designed to repair hydraulic fluid leaks, reduce friction/wear and renew seals and O-rings in hydraulic systems

Engineered to be professional-grade and is safe to use for consumer applications as well as commercial use cases

Works with all petroleum and synthetic fluids, pump seals, control valve seals, actuators, rams, cylinders, O-ring boss fittings and hydrostatic transmissions

Fights friction and engine wear

Cushions and coats engine parts to reduce friction and wear by preventing metal-to-metal contact between moving parts

Quiets noisy engines

Effectively seals all minor engine oil, transmission and power steering system leak

It works with all engine oil, transmission fluid and power steering fluids

Also compatible with diesel and turbocharged engines

Cleans fuel injectors to save on gas

Maintains optimum efficiency and power with regular use

Smoothens rough idle and eliminates hard starts giving cleaner, quieter operation

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

Brand: Bars Leaks

Radiator Stop Leak Concentrate

Size: 11 oz

Stops block leaks

Seals cracked cylinder heads and blocks

Repairs blown head gaskets

Bar’s Leaks Trans Fix is an advanced, synthetic-blend treatment for transmission fluid, seals, metal surfaces, bands and clutch plates; this global domestic/import formulation can be used in all automatics, manuals, CVTs (Continuously Variable Transmissions) and DCTs (Dual Clutch Transmissions)

Seal conditioners stop current leaks and prevent future instances by protecting and reconditioning seals

Extreme pressure/anti-wear agents provide better metal-to-metal friction properties to stop slipping, jerking, hard shifting, shutter/shudder, which improves shift feel and provides better driving comfort

ADVANCED PROTECTION AGAINST the four main causes of engine breakdown: wear friction heat and deposits

40% BETTER WEAR PROTECTION vs. industry standard as tested in the Sequence IVB engine test

25% BETTER DEPOSIT PROTECTION with superior engine cleaning detergents as tested in the GMOD engine test

Cleans and Lubricates Fuel System: The product contains a blend of detergents and additives that help to clean and lubricate the fuel system, including the fuel injectors, carburetor, and combustion chamber.

Improves Fuel Economy: The product can help to improve fuel economy by removing deposits and contaminants from the fuel system and improving the efficiency of fuel combustion.

Reduces Emissions: By improving fuel combustion, the product can also help to reduce exhaust emissions, including harmful pollutants such as carbon monoxide and nitrogen oxides.

Tested and approved by Briggs & Stratton engineers

Warranty certified and recommended in all Briggs & Stratton manuals

A high quality detergent oil classified SJ/CD by the API

AMERICA’S RACING OIL is recommended for high-performance gasoline engines as well as those burning full or partial alcohol fuels

SPECIAL FRICTION MODIFIERS help minimize friction, keeping heat at bay for maximum power and torque at high RPMs.

2X MORE ZINC FOR EXTREME WEAR PROTECTION for even greater film strength and anti-wear protection on critical engine components such as pistons, cams and bearings

Product 1: Mixable with all commercially available motor oils

Product 1: Stable even under high thermal and dynamic permanent loads

Product 1: No deposits and absolutely compatible with all commonly used filter systems

Product 1: Mixable with all commercially available motor oils

Product 1: Stable even under high thermal and dynamic permanent loads

Product 1: No deposits and absolutely compatible with all commonly used filter systems

100 percent pure petroleum

EPA registered product

Liquefies gum and varnish deposits or internal engine contaminants

For use on certain limited-slip differentials to reduce chatter and hypoid gear noise levels

Use according to owner guide recommendations

Formulated for automotive use

Adheres to component surfaces to prevent scuffing and galling during initial start-up

High quality formulation meets OEM performance specs for engine assembly lubricants

Proper lubrication of metal mating surfaces is essential prior to starting a new or rebuilt engine

High quality fluid keeps supercharger bearings operating properly

Unique product has excellent oxidation stability and low wear characteristics

Specially formulated for use with all supercharged vehicles