Years of normal operation will create conditions that can gradually reduce the cooling efficiency of a radiator. One example is caused by a build-up of road grime on the front side of the radiator. This is a very common problem on cars equipped with AC and is not visible as the AC condenser obstructs the view. The build-up reduces the surface area of the radiator, gradually reducing cooling effectiveness to the point where it may not be able to properly cool in hot weather. This results in boil over. This problem can usually be resolved by aiming a high-pressure wash from the fan side of the radiator to blast the build-up off of the radiator. This should be done once a year as preventative maintenance. The more common problem of internal clogging. If you find that you need to replace the radiator, consider our all-metal three-row upgrade for increased cooling and serviceability. Includes a one year warranty.

When you are doing anything to the cooling system, be sure to check the condition of the belts, hoses and clamps. Inspect a belt by turning it to see if it shows any signs of cracking or fraying where it rides in the pulley. The telltale squeal will let you know if it is not adjusted correctly. Hoses should be easy to compress with your hand but not too soft, as if the reinforcement inside has broken. A hose that has become rigid is just as bad as a soft one, as it can stress the neck of the radiator from engine movement.

Don’t forget to order new clamps with your hoses! It will make the job much easier and it’s not uncommon for old corroded clamps to “blow up” upon removal.