Find Your Fix!
Use our interactive Fix My Leak tool to identify the type of leak you have and learn about which K&W Stop Leak product to use to address the issue! Whether it’s a radiator leak, automatic transmission leak, power steering leak, engine coolant leak, or an oil leak, K&W can help you diagnose and fix the problem quickly and affordably.
Launch Fix My Leak
Where is your leak coming from?
Is your car experiencing one of these symptoms?
Black/brown fluid is likely an engine oil leak. You can use:
Super Turbo™ Engine Oil Stop Leak
Est Cost
$8-$11
10 Min
You likely have a leak from your Automatic Transmission, you can use Trans-X or Trans-X 75 for higher mileage engines:
Trans-X® Automatic Transmission Stop Leak & Tune Up
Est Cost
$7-$10
10 Min
Trans-X® 75K High Mileage Transmission Treatment
Est Cost
$12-$15
10 Min
If the leak is coming from a coolant hose, you’ll need to replace it. If the leak is from the radiator, you can use:
Instant Cooling System Stop Leak
Est Cost
$13-$16
10 Min
If the leak is coming from your steering rack, you can use:
Steer-X® Power Steering Stop Leak
Est Cost
$10-$13
10 Min
You likely have an engine coolant leak. It could be from the head gaskets, engine block, cylinder heads, heater core, radiator or coolant hose. If it’s a coolant hose, you’ll need to replace it. The other leaks listed may be fixed with one of these K&W Stop Leak Solutions:
FiberLock® Head Gasket & Block Repair
Est Cost
$30-$40
30 Min
Permanent Head Gasket & Block Repair with Nanotechnology
Est Cost
$20-$26
2 HOURS
+ Sit for 12hrs
Block Seal Permanent Metallic™ Block & Radiator Seal
Est Cost
$9-$12
2 HOURS
+ Sit for 24hrs
You likely have an engine coolant leak. It could be from the head gaskets, engine block, cylinder heads, heater core, radiator or coolant hose. If it’s a coolant hose, you’ll need to replace it. The other leaks listed may be fixed with one of these K&W Stop Leak Solutions:
Permanent Head Gasket & Block Repair with Nanotechnology
Est Cost
$20-$26
2 HOURS
+ Sit for 12hrs
Block Seal Permanent Metallic™ Block & Radiator Seal
Est Cost
$9-$12
2 HOURS
+ Sit for 24hrs