Bar's Leaks, Rislone, Hyperlube. Advanced Solutions for automotive repair, maintenence & performance
Bar's Leaks, Rislone, Hyperlube. Advanced Solutions for automotive repair, maintenence & performance

How-To Videos & More

Hy-per Lube 2019 National TV Commercial

Hy-per Lube is for high speed, high demand, high stress situations, when additive failure is not an option. Go Hy-per.

Rislone 2019 National TV Commercial

We’ve been in the car performance and maintenance business for a long time. It’s time to expect more out of your additives.

Bar’s Leaks National TV Commercial

Bar’s Leaks is the #1 chemical repair brand in history. We help you stop leaks, so leaks don’t stop your life.

Featured Products


BAR’S LEAKS Head Gasket Fix

Our #1 all-time bestselling head gasket fix formula. Pop-and-pour, instant results.

Bar's Leaks Rear Main Seal Repair

The industry's #1 selling engine oil repair formula for all oil leaks.

Bar's Leaks Head Gasket Sealant

Forget that repair bill and DIY at a fraction of the cost.

Bar's Leaks CVT Transmission Fix™

The most advanced Continuously Variable Transmission (CVT) fix you can buy.

Bar's Leaks Engine Repair

Fixes worn bearings, leaking seals, ticking lifters and oil blow-by.

Bar's Leaks Automatic Transmission Repair

Restores performance, reduces rough shifting, eliminates slip, repairs shudder/chatter.

Bar's Leaks Power Steering Repair

Reduces noise and fixes hard steering caused by power steering fluid leaks.

Bar's Leaks One Seal™ Stop Leak

The one-stop product: seals all minor engine oil, transmission and power steering system leaks.

Bar's Leaks Radiator & Heater Core Stop Leak

Our next-generation cooling system formulation. Repairs and protects against future leaks.

Bar's Leaks Block Seal Stop Leak

Fixes larger leaks in radiators, intake systems & other cooling system components.

Bar's Leaks Heavy Duty Radiator Stop Leak

Formulated to seal larger leaks better than other stop leak products.

Bar's Leaks Radiator Stop Leak

Stops and seals antifreeze/coolant leaks. Works with all antifreeze coolant types or water.

Bar's Leaks Jack Oil with Stop Leak

Stops leaks caused by normal jack wear and age. Also great for snow plows & other hydraulics.

Bar's Leaks Cooling System Repair

Stops coolant leaks and reduces antifreeze loss while correcting other cooling system problems.

Bar's Leaks Head Seal™ Blown Head Gasket Repair

Pro-grade & guaranteed. Our strongest blown head gasket repair ever.

Bar's Leaks Oil Seal™ Engine Burning & Leak Repair

Our most advanced, pro-grade oil leak repair ever. Backed by guarantee.

Bar's Leaks Super Leak Fix

Formulated to work in multiple systems including all Engine Oil, Transmission, Power Steering, Hydraulic and Differential & Gear.

Rislone Transmission Stop Slip

Viscosity improvers, friction modifiers & performance additives fix most transmission problems.

Rislone Ring Seal Smoke Repair

Renews worn engines, rebuilds compression & restores lost power.

Rislone Compression Repair

Frees sticky rings and fills scratches in cylinder walls, fixing blow-by and compression loss.

Rislone Engine Treatment

A Rislone engine treatment specifically formulated for high-mileage vehicles.

Rislone Gasoline Treatment

Winner of the PTEN Innovation Award. Six additives in one bottle.

Hy-per lube® Oil Supplement

Reduces heat & noise, improves performance & protection. Wet clutch compatible.

Hy-per lube®<br> SUPER COOLANT

Tested in the harshest operating conditions. Backed by lab data showing ability to lower cylinder head temps.

Bar's Leaks®

At Bar’s Leaks, stopping fluid leaks isn’t part of our business — it is our business. For over 70 years we have been the #1 go-to fix for any leaks related to cooling systems, engine oil, power steering, head gaskets, transmissions and more.


Rislone develops the best automotive additives on the market, so you can keep your car running like new. Whether you’re looking to maintain, boost or extend your car’s performance, we create the perfect product to meet those goals — just ask millions of racing and off-road enthusiasts worldwide.

Hy-per® Bube

Hy-per Lube is recognized throughout North America for delivering high-end, stress-tested oil and coolant additives to users who demand the very best.® ©2001- 2020  AutoZone, Inc. All Rights Reserved.