How To Thursdays – How to Fix Minor Radiator Leaks

radiator_leakRadiators perform a vital function, helping to cool a vehicle’s engine and keeping the operating temperature at a safe level. However, no radiator can perform its job effectively without proper coolant levels. While this normally isn’t a problem, even a small leak can cause a radiator to lose enough coolant that it can no longer work as intended. Fortunately, minor leaks can be repaired quickly and effectively.

Identify the Leak

The first step in repairing a leak is to identify where the problem is located. Begin by carefully wiping down the radiator and cleaning the entire surface. Start the vehicle and let it run briefly, then turn the engine off and let it cool. Inspect the radiator closely, looking for a small wet spot or signs of corrosion. If the leak appears to be minor, proceed with the next step. If the leak is more significant or there is visible damage, however, it may require repair from a professional mechanic.

Seal It Up

AlumasealSmall coolant leaks are more of a nuisance than a major problem, and they can be repaired in several ways. The easiest and most effective way to fix a minor leak is by using an AlumAseal Radiator Stop Leak product.

Beginning with a cool engine, remove the radiator cap and pour in the AlumAseal according to the directions on the label. Replace the radiator cap and drive the vehicle for at least 20 minutes to allow the AlumAseal to circulate throughout the radiator.

Turning the heater to its highest setting will also help speed up the process. AlumAseal effectively patches any small hole or crack it comes into contact with, preventing additional coolant from leaking out.

See a Mechanic

Though minor leaks can be fixed easily, some leaks may be too significant to repair at home. If the coolant leak still persists even after using AlumAseal, professional repairs may be necessary. A mechanic is also the best option if a visible leak cannot be detected as this may be indicative of a problem elsewhere in the engine. A good mechanic has the tools and expertise to inspect the radiator as well as the rest of the engine, tracking down any issues and repairing them permanently.