To test for a coolant leak, start by ensuring the engine is cool to prevent burns.** Inspect the ground beneath the vehicle for any puddles or wet spots. Check the radiator, hoses, and coolant reservoir for visible leaks or dampness. Look for dried coolant stains, which may appear as white or colored residue. Next, use a pressure tester on the radiator to pressurize the system, helping to reveal slow leaks. Listen for hissing sounds indicating escaping coolant. Examine the oil for a milky appearance, suggesting an internal leak. Lastly, consider using a UV dye and black light kit; add the dye to the coolant, run the engine, and use the black light to spot leaks illuminated by the dye. If a leak is suspected but not visible, a mechanic can perform a more detailed inspection.

Suspect a coolant leak? Contact Crossroads Helpline mechanic today for an inspection.