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It's important to keep the radiator fins and AC condenser free of dust buildup, insects and other debris that can restrict airflow and thus diminish the overall effectiveness of the cooling system.
A brush is one fairly effective means of cleaning debris from the intricate network of aluminum fins. Gently brush in one direction and dislodge any debris that's stuck between the fins. An easier and more effective technique is to use a burst of air from an air compressor.
In order to prevent insects from clogging the fins in the first place, you may want to install a bug net. These mount on your front grill and are particularly beneficial in the spring and summer or if you live in a region of the country that's especially "buggy."
Another condition that can impede airflow is bent radiator fins. Fins can become damaged by being struck by rocks during highway driving or by careless handling of the radiator during engine repairs. You can straighten out bent fins with a fine, sharp object such as an icepick, or you can use a specialized tool designed specifically for the job a radiator comb.
Careful use of a radiator comb will help return bent fins to their proper shape and position. Be careful when using the comb, as the thin walls of the fins are delicate. This is a tedious job, so take your time and be patient.
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