Best Bar's Leaks in 2026

Prevents Camshaft Wear

Reduces Piston Scuffing

Increases Engine Life

Increases Oil Pressure

Reduces Friction

Helps Clean Internal Parts

Restores performance and smoothest out hard steering

Quiets squeal and noisy pumps

Stops leaks

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

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

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

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

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.

Repairs Blown Head And Intake Gasket Leaks

Seals Cracked Cylinder Heads And Blocks

Stops Heater Core And Radiator Leaks

Seals larger leaks seals

Repairs heater core leaks

Repairs freeze plug leaks

Restores performance

Stops slipping and prevents lazy shifts

Quiets noise

Stops and seals transmission fluid leaks

Works with all types of transmission fluids

Restores gasket and seals to stop transmission fluid leaks

Stops and seals motor oil leaks

Works with all types of motor oil

Restores gaskets; seals to stop and prevent engine oil 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

Stop Slipping, Rough Shifting, & Seals Fluid Leaks

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

Reduces Noise

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

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

MAXLIFE TECHNOLOGY PREVENTS engine breakdown with 40% better wear protection than the industry standard

REFRESH AGING SEALS AND PREVENT LEAKS with seal conditioners

REDUCE SLUDGE, DEPOSITS, CORROSION, AND RUST with added detergents – keep motors clean inside

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

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