While your radiator is one of the cheaper components in your car, if it develops a leak, it can still cost you a few hundred to repair. Or you could fix the leak with a bottle of K-seal. The special formulation is simply shaken and poured in; it will find its way to any leaks, permanently repairing most holes up to .7mm. K-seal is ideal for older engines, as it also repairs leaks in the head, head gasket, block, heater matrix, freeze plug, and water-pump casing, creating an extremely strong and permanent seal. Priced at around $35, this great product is now available in New Zealand from leading automotive stores. Visit kseal.com/nz for more info.