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  #31  
Old 09-03-2007, 05:07 PM
a2t a2t is offline
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Join Date: May 2005
Location: Atlanta, GA
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Thanks. Its piss poor that I live in downtown Atlanta and havent been able to find anyone to take my used antifreeze. I have 3 vehicles that get yearly coolant flushes. Hate to dump it down drain. Sheesh...

Quote:
Originally Posted by nhdoc View Post
The household septic system is the one place you DON'T want to send used antifreeze. The fact is municipal sewer systems can and do process the chemicals in antifreeze, and in many areas while not "publicized" it is permitted. This was taken from the Ohio EPA website:

Disposal of Antifreeze

The hazardous chemicals in antifreeze can be broken down in most sewage treatment plants. If you cannot recycle the antifreeze and your home is connected to a sanitary sewer system, you may flush used antifreeze from your automobile down the toilet or sink. Be sure to wash it down the drain with plenty of water.

If your wastewater goes into a septic system, do not pour used antifreeze down your toilet or sink. Antifreeze can inhibit organisms in a septic system, causing damage to the system. In this case, ask someone who is connected to a sewer system to dispose of your antifreeze for you.

Empty antifreeze containers should be thoroughly rinsed before disposal. The rinsewater should be flushed down the drain in a home connected to a sanitary sewer.


And this is from Colorado's website:

Dilute and Flush
Flushing used antifreeze down the drain is the least-preferred disposal option, but it may be the only option available in some areas. Your wastewater treatment facility should be contacted to ensure that they can accept the waste prior to using this method.

Although antifreeze is biodegradable, households on septic systems should NOT dispose of antifreeze down the drain. If your home is connected to a septic tank, give this product to someone who is connected to a municipal sewer system. Even in a diluted form, antifreeze can overwhelm and destroy the bacterial action in your septic system and drain field.

Procedures include:

Provide adequate ventilation by opening windows and doors and/or turning on a room fan.

Wear protective clothing such as chemical resistant gloves, eye protection and long sleeves.

Carefully pour about 1 gallon of diluted antifreeze down the sink, flushing with large amounts of water. Failure to dilute antifreeze may damage pipes or other parts of your plumbing.

Continue disposing in 1 gallon batches until completely gone. Don't mix products, and wait several hours between disposing of different types of products.

The best time to do this is during the working day when the sewage system is in full use so that this material passes through the municipal sewage system faster.

These procedures are intended for small quantities of used antifreeze from a household only.


I only did a quick search and found those two states but, for pete's sake, if Colorado says it is OK to do it it must not be too bad. I am not implying that this is permitted everywhere, I am just posting this so people understand there's typically nothing in used antifreeze that a public sewer system can't process in relatively low dilution. Large generators of used antifreeze should not flush it but a couple of gallons a year from a household won't harm anything.
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  #32  
Old 06-05-2008, 04:59 PM
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Join Date: Apr 1999
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Quote:
Originally Posted by nhdoc View Post
G-05 is supposed to be good for 5 year/150K miles...how much longer life is there than that?

I usually just drain and replace mine every 2 years. Since I only drain from the radiator and not the block/heater I figure I get about 2/3rds of the stuff renewed then and so the percentage of old stuff in there is relatively small and it is mostly fresh stuff by doing it that often. I realize this is somewhat the lazy way out but my cooling systems always stay in perfect shape with this routine so it is what I have adopted.
MB only approves 5-year coolant life with their new "coolant recharge" technology, which is basically suspended silica-gel, to what ratio, I don't know.

Otherwise it's every 2-3 years just as you do.

:-) neil
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