You will need
  • Dry mustard powder, polymer sealant, special soldering iron, solder, a "cold welding".
Find the place of leakage of antifreeze from a car radiator. If the hole is small, it is easier just patch them with the help of special additives that are backfilled or filled directly into the cooling system through the reservoir or expander through the neck of the radiator.
Dissolve some powder dry mustard in the antifreeze and pour the mixture into the cooling system of the car. Start the engine. When the antifreeze heats up, the mustard steamed and reduce or even completely seal small leaks.
Use modern polymer sealants. Pour in the polymerizing medium and warm up the motor. The heated sealant is exposed to air will turn into a solid film in place of the flow of antifreeze. This method is suitable for small size holes, not more than 2 mm2. Such sealant high cohesion (adhesion of particles), so the tubes of the radiator will not be affected.
If the holes in the radiator are large and sealant powerless, conduct more extensive repairs. Drain the engine coolant. Copper radiator crack sealed using a special powerful soldering iron and solder.
If the radiator is aluminum, use the "cold welding". This is a special two-component adhesive-sealant based on epoxy. In appearance and structure, it resembles clay. Consists of two parts, which prior to use need to mix.
Try to degrease and dry the place of sealing. Tape the crack carefully and thoroughly, observing technology. Give "cold welding" to harden and seize, before you start the car.
Prepare yourself for the fact that such repairs are only temporary. Be sure to watch the coolant level in the reservoir of the expander. If there continue to be leakage of antifreeze, add coolant before each exit of the Parking lot.
Replace leaking radiator new at the first opportunity. At the same time change to new hoses and clamps cooling system of the machine.