11: Just as with the other cleaner, the final step is to completely rinse the radiator stack. In this photo we are showing the proper fan spray using a hose end spray nozzle. This method is actually more effective at rinsing but you must refrain from using a jet of water or you will damage the fins. Some owners also report successfully rinsing from both sides of the radiator, but if you do this, prepare to get wet since you’ll be lying on the ground.
Clearsource premium two-canister RV-specific system, tucked into a stout housing, removes much of the bad stuff while streamlining the process