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NOT CHANGING ANTIFREEZE REGULARLY
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Posted by Ken McWilliams on October 21, 2000 at 18:25:24 from (205.188.192.22):
When it comes to changing oil, I very diligently change oil every 5K miles in my vehicles. When it comes to changing antifreeze- I never do except when blowing a hose. Each year about this time, we hear the propagana from the antifreeze makers to change your antifreeze. It seems the fox is watching the hen house. In a closed system as in the cooling system of an internal combustion engine, the components in the system reach an equilibrium. For example, if you would dissolve some salt into water, it would dissolve up to a point and the excess will settle to the bottom. You could warm it up to dissolve the excess, but when it cooled down, it would precipitate out. Likewise, when you add water and antifreeze to a cooling system, the oxygen in the water will oxidize a certain amount cast iron in the water jacket and form some rust. However, once the oxygen has formed a certain amount of rust it can't form any more. Thus, it is in equilibrium. Now the propaganists tell us to change the antifreeze yearly or every-other year. The introduction of fresh water starts the rusting all over again. Then, we buy some rust-stop which they conveniently supply. So on it goes. Then they tell us the antifreeze wears out. How? It's ethylene glycol. (C2H2OH). What does it break down to? Hmmm! I've never had an engine to freeze. I've not had to change more than 2 water pumps in 35 years on my on vehicles. I'm now old enough that I've bought enough new vehicles and tractors or owned them long enough to try this on. My antifreeze/water system stays looking very nice over the years. I have a 1964 Ford that has had the antifreeze in it since 1983 when I restored it. My dad bought it new and I got it in 1970. I blew a hose in 1972 and and added some 50/50. Until 1983 when the car was restored the antifreeze stayed in it. My 86 F-250 only had 50/50 added to it over a 12 year period. Likewise a '89 Mercury Grand Marquis. An '81 Cadillac was changed only once when the GM 350 diesel in it was rebuilt at 80K. Then ran it to 180K no problems with the cooling system. When I have to do some work on a tractor or vehicle, I will drain and save the water/antifreeze and reuse it. I'll not pour the dregs back into the cooling system, however, and I'll top it off with a 50/50 mix that I keep on hand. Do you follow the recommendations of the antifreeze manufacturers and change your antifreeze? Do you have problems with rust clogging the system, corroded freeze plugs that leak and have to be replaced, or leaky heater cores? This corrosion couldn't happen if you keep the system closed. Your opinions, please. Ken McWilliams
Dayton, OH
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