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Old 06-25-2013, 02:19 PM
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whunter whunter is offline
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Location: Metro Detroit, Michigan
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Answer

Quote:
Originally Posted by funola View Post
Why wouldn't the coolant corrode the radiator from the inside out being aluminum also? Being thinner metal, shouldn't it corrode out first?
Part of the answer is metal quality:
* Heat exchangers are much higher quality aluminum.
* Heat exchangers rarely have mixed metals (electrolysis) as engines do
* Heat exchangers are more subject to calcium depositing in the small passages.

I am old school: Here is an example of extreme cleaning on my personal vehicles.

#1. Supplies = a gallon of Cider Vinegar, fresh antifreeze, a small box of baking soda.
#2. Drain the cooling system
#3. Pour in the gallon of Cider Vinegar
#4. Top off the cooling system with water
#5. Take a thirty minute drive
#6. Drain the cooling system
**********************************
#7. Flush the cooling system
*********************************
#8. Drain the cooling system

- - - Neutralize the cooling system - - -
#8A. Pour in four - six ounces of baking soda
#8B. Fill the cooling system with water
#8C. Take a thirty minute drive
#8D. Flush the cooling system
#8E. Drain the cooling system
#8F. Pour in one gallon of fresh antifreeze
#8G. Top off the system with distilled water
#8H. Take a thirty minute drive, expecting to see several temperature guage fluctuations, as air bleeds out of the system.


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