Too Much Rust

Excess rust will likely cause an early failure of this cooling unit.

10: If you decide to pursue the aerosol coil cleaner method, spray the cleaner over the entire area of the radiator and you will start to see the foam appear on the surface. The foam will actually push the dirt and debris out of the radiator because of the mechanical action of the expanding foam. Since there isn’t an extension hose as with the pump-up sprayer, using aerosol cans makes spraying the other side of the radiator/charge air cooler more difficult. If you have access to safety jacks (don’t rely on the leveling jacks alone) you can use them to raise the coach before crawling under to get better access to the other side, which is the dirtiest part.

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