K-Seal is very easy to use. Just shake the contents of the bottle and pour the bottle's contents into your cooling system. There is no need to drain your vehicle's cooling system before or after adding K-Seal.
K-Seal mixes with all types of coolants and flows through your vehicle's cooling system. When there is a crack or hole in the cooling system, this leak generates a low-pressure area. K-Seal deposits ceramic microfibers and fine copper granules as it flows through the damaged areas. Within seconds the crack or hole is completely filled with the ceramic microfibers and copper and sealed. The seal is further enhanced by heat to form a repair that will last for the life of the vehicle. If you drain the coolant thereafter, the K-Seal in your cooling system will drain with the coolant. However, the repair will remain. New coolant will not affect the integrity of the K-Seal repair or repairs.
When K-Seal is in your cooling system, it will stay mixed with the coolant and repair cracks, holes, and other leaks in your vehicle's cooling system. Even if you do not presently have any leaks in your cooling system, you can add K-Seal as a preventative measure and K-Seal will repair leaks that should appear in the future. Just be sure to retreat with K-Seal with every coolant change if you want to repair future leaks.
We have used K-Seal on our own vehicles and can say unequivocally that it really works. We were surprised to see that K-Seal fixed our leaking cooling systems almost instantly. The portions of our cooling systems that leaked are now bone-dry. Furthermore, K-Seal seems to have repaired head gasket leaks that we didn't even know about, because both of our vehicles ran much more smoothly after the K-Seal.
This juncture in Ho's cooling system was leaking. You can see the corrosion in the material from always being wet. This leak was annoying, but minor enough that laziness prevailed and was left unrepaired. Adding K-Seal to Ho's cooling system immediately sealed the leak. The corrosion remains, but the housing is now bone-dry.
K-Seal is designed for use with all water-based cooling systems. One 8 oz. bottle of K-Seal will treat cooling systems with a capacity up to 21 quarts. For larger cooling systems, use two bottles of K-Seal.