- Block & Head Gasket
- Stops Leaks
- One Step, No Draining Required
- Antifreeze Compatible Sodium Silicate Formula
- Permanent Cooling System Repair
- Works with All Types of Antifreeze or Water
Yes, unlike other copper stop leak products, Liquid Copper™ One Step sealer contains an antifreeze compatible sodium silicate formula, so draining of the cooling system is not required as long as manufactures recommendations are followed. It also can be used in water alone however, a second bottle of Liquid Copper™ is recommended to be added to the system once antifreeze is installed.
Yes, Liquid Copper™ is compatible with ALL types of traditional or extended life coolant including yellow, orange, pink, red, blue, purple and green silicate based & non-silicate based (OAT/HOAT) 50-50 mix antifreeze, and/or water.
No, this product is designed to be left in the cooling system to protect from future leaks.
It stops leaks by forming a physical plug with organic and synthetic fibers, copper and an ionic modified mineral. The plug forms as the coolant and sealer flow out of the leak. A wetting agent cleans the sides of the hole and prepares the surface for bonding. The first fibers catch on the side of the leak or hole eventually bridging the entire hole. The fibers now act as a sieve trapping more fibers, copper particles and minerals, creating a composite plug. This plug is stabilized or cemented with a liquid glass. The liquid glass hardens with increased temperature and completes the seal.
Results should be noticeable within 20 to 30 minutes. If the leak is not sealed in 30 minutes of running, mechanical repair may be needed.
One bottle treats cooling systems from 11 liters to 23 liters. Use 1/2 bottle for cooling systems from 7 liters to 10.9 liters. For larger systems use one bottle for every 23 liters of cooling system capacity. Small engines or other small systems use approximately 25 mL per liter of fluid capacity.
No, Liquid Copper™ will not plug the heater core. Note: If using Rislone® to stop heater core leaks, make sure you turn your heater control to HOT. Some vehicles have a valve that controls coolant flow through the core and is only opened in the HOT position.
For best results Liquid Copper™ should not be installed in a regular overflow tank unless it has a screw on pressurized cap. If you do not have access to your radiator, remove top hose where it connects to the top of the radiator and install product in hose. Reattach hose and tighten clamp.
Yes, Liquid Copper™ will work in all types of water cooled vehicles.
If the product is accidently installed in the engine oil and the engine has not been started, in many cases you can remove the valve cover where installed and drain the oil leaving the drain plug off. Then use an engine flush washing out the head giving special attention to the oil return holes that run down to the oil pan. Clean these out and pour the engine flush down these holes flushing everything into the oil pan and out the drain hole. If the engine has been run, the vehicle needs to be towed to a professional mechanic for evaluation. This might include taking the engine apart to clean all of the internal parts.
It’s part of life: older cars, trucks, vans, SUVs and even RVs can develop large leaks in their radiators and intake manifolds. If you’ve tried regular stop leak products you know they are not powerful enough to stop these larger leaks. That’s why Rislone designed the Liquid Copper Block Seal Intake & Radiator Stop Leak. This one-step sealer was designed to quickly and safely stop these overwhelming leaks.
What’s it do? Our formula permanently repairs larger leaks in radiators, intake manifolds and gaskets, heater cores, blocks, heads and freeze plugs. It contains an antifreeze-compatible sodium silicate liquid glass formula, so no draining of the cooling system is required. Not to mention, it will not harm the cooling system when used properly.
Their stop leak products can’t get your show back on the road like Rislone — that’s why we’ve been the most trusted stop leak brand since 1947. Make sure to watch Bobby and Caitlin in our handy how-to video so you can become a “three- minute mechanic” and finally take control of that leak.