Re: Radiator Chemistry?
#2 first. Calcium and magnesium carbonate precipitate on a rise in water temperature. (the crusty deposits you can see are the precipitating salts). These become aparent when tap water is used in your radiator, since this water is "hard" with calcium and magnesium. To help elliminate this problem from happening in the future, simply use distilled bottled water from a water shop or just plain old rain water that has been collected in a wood or plastic barrel. I've used this type of water in my 93 king 4x4 since new and the cooling tubes still shine of copper. As for a home remedy; two suggested remedys that will produce equal results. Try running simple vinegar and distilled/rain water mix in your system. Or, "CLR" and distilled/rain water, (calcium,lime,rust remover). It is available at your local hardware store. Mix the water/vinegar mix @ 3:1. OR Mix the water/CLR mix @ 5:1. Run either of these mixtures through your system for approx 30 to 40 minutes. Make sure your themostat opens so that the whole solution cirulates throughout. DRAIN, CIRCULATE and FLUSH with rain water. DRAIN, CIRCULATE and FLUSH with more fresh rain water. DRAIN, CIRCULATE and FLUSH with rain water one last time. It is imperative that no vinegar or CLR is left behind anywhere in the system. Hope this helps. Depending on how bad the clogging is' this may or may not help.. Rad shops can't always remove all deposits if left for too long. After youv'e added your new water/antifreeze mix be sure to add a bottle of "antifreeze and water pump conditioner". Available at your local Nissan parts dept. Also remember to move your cabin heat control to "full heat" for this whole procedure, for this will also help flush your heater core!!!! #1 Rad shops use a strong acid to dissolve the deposits. THIS DOES NOT ALWAYS WORK!!! good luck.