HOW TO CLEAN RADIATOR FINS

Driving through a swarm of insects can leave your car covered in squashed bugs. While it looks bad on the outside of your car, the dead bugs, along with dirt and road grime, can become trapped in your radiator fins, the thin metal fins located on the front of the radiator. Over time, this buildup can block airflow and make it harder for your engine to stay cool.

Radiator fins keep your engine cool by allowing air to pass through the radiator and carry heat away from the coolant inside. When your radiator fins become clogged, they can block airflow, causing the engine to overheat and leading to costly repairs.

Periodically cleaning radiator fins can help maintain airflow through the cooling system and may reduce the risk of overheating caused by airflow restrictions.

When cleaning your radiator fins, avoid products such as vinegar or bleach, as they can damage metal parts and rubber seals. A safer option is Simple Green Pro HD Heavy-Duty Cleaner, a professional-grade, engine-safe cleaner/degreaser that breaks down grease, grime, automotive fluids, and bugs. The powerful, clean-rinsing formula is non-corrosive to metals including aluminum, stainless steel, chrome, and alloys.

Directions for Cleaning Radiator Fins:

Tip: Check your owner's manual before cleaning the radiator fins. Always follow the manufacturer's instructions for cleaning and maintenance. Ensure the radiator fins are cool to the touch before cleaning.

1. Dilute. In a dilution bottle or empty spray bottle, mix 1 part Simple Green Pro HD Heavy-Duty Cleaner to 3 parts water (1:3 ratio) and lightly shake to mix the solution.
2. Spray. Spray the radiator fins with the diluted Simple Green Pro HD Heavy-Duty Cleaner.
3. Remove debris. Use a soft-bristled brush to gently clear small rocks, bugs, and other debris caught in the radiator fins. If the fins are bent, use a fin comb or small flat tool designed for radiator maintenance to carefully straighten bent fins.
4. Rinse. Using a low-pressure garden hose or a bucket of clean water to gently rinse from the engine side toward the front of the vehicle whenever possible to help push debris out the same direction it entered. If the water does not run clear after rinsing, repeat steps 1-3.
5. Dry. Allow excess water to drain before reinstalling any removed covers or panels.