My Mercury Sable overheat it's a 1990 with no loss of radiator Clint it when I drive it cools down slowly

Hello, it's hard to understand exactly what you mean. The radiator does not lose coolant, is that right? Check for proper cooling fan operation. Also ensure you have enough coolant and no air pockets in the cooling system. There are a number of things to inspect during a troubleshooting process. https://repairpal.com/repair-shops