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Anti-freeze How often to change ?

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Courtland

01-28-2003 13:57:38




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how often do you change your antifreeze in your antique tractor ??




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Wayne Swenson

01-28-2003 21:18:52




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 Re: Anti-freeze How often to change ? in reply to Courtland, 01-28-2003 13:57:38  
The ethylene glycol portion of anti-freeze doesn't wear out; the other additives do.
Anti-rust, anti-foam, waterpump lubricant additives do their job and must be replaced .
How often?? Depends on the usage of your machine and the quality of the water mixed in with the anti-freeze.
Dissimilar metals in a liquid solution will create a battery-acid like reaction in the cooling system. Electrolysis can eat away at the metal parts if the solution is left for too long.
Cheapest prevention is to replace every few years, based on your operating time & habits.

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JD Guy in NE

01-29-2003 16:44:57




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 Re: Re: Anti-freeze How often to change ? in reply to Wayne Swenson, 01-28-2003 21:18:52  
I agree, changing your antifreeze each season is cheap insurance considering the damage it can do to other systems if the additives are diluted.. it's a good example of being 'penney wise and pound foolish'...



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John VB

01-30-2003 18:00:38




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 Re: Re: Re: Anti-freeze How often to change ? in reply to JD Guy in NE, 01-29-2003 16:44:57  
It is a good idea to change it often, but what are all these people who change their antifreeze each year doing with it?? I won't dump it on the ground and it's hard to find a place to get rid of it.

Where in NE are you located JD Guy??



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Gman

01-28-2003 21:03:58




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 Re: Anti-freeze How often to change ? in reply to Courtland, 01-28-2003 13:57:38  
Courtland in my old tractors I put John Deere Conditioner in the cooling system stay real clean and no rust.Garland



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Bouncer

01-28-2003 18:56:19




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 Re: Anti-freeze How often to change ? in reply to Courtland, 01-28-2003 13:57:38  
I have bought tractors that has probably had antifreeze in them for 30 years or more. I think the only time you really have to worried about antifreeze is in these newer automobiles with aluminum heads and such. After so long it can eat up a head, I have saw it done. That's why they reccomend changing it in your vehicles so much. Bill (Antique Acres)



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Lee

01-28-2003 18:44:33




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 Re: Anti-freeze How often to change ? in reply to Courtland, 01-28-2003 13:57:38  
Never - Ethelyene Glycol is one of the most persistant chemicals man has come across, I don't believe that it ever goes 'bad' or needs changing despite any amount of Prestone TV commercials. As to the anti-rust and anti-corrosion claims, how about you just sell me that stuff instead? No? Well, then, no sale.



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F-I-T

01-29-2003 10:50:38




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 Re: Re: Anti-freeze How often to change ? in reply to Lee, 01-28-2003 18:44:33  
A few years back when anit-freeze got very expensive due to the high price of natural gas used in processing, Prestone and others sold a "Booster" product designed to re-constitute portions of the additive package that had been exhuasted due to heat and use. Not sure if's available any longer, but changing the Ethylene-glycol before it gets acidic is fairly cheap insurance. Saw more than one head gasket attacked by old coolant. Made me a believer.

Frank-in-Tallahassee
70D // 855

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Lee

01-29-2003 18:40:06




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 Re: Re: Re: Anti-freeze How often to change ? in reply to F-I-T, 01-29-2003 10:50:38  
I'm thinking a little bi-carb might be in order when and IF a ph test strip showed lower than 7. :) It's not penny wise and pound foolish - it's poor people have poor ways and poor ways make poor people... 2 pickup, 3 cars, 3 tractors = 20 gallons of antifreeze yearly = $80 if I can catch it on sale with the money in my pocket (never happens). So I can't afford the warm fuzzy feeling all you seem to enjoy, and that's just life like it really is. My 59 chevy is going on 30 years since it's last overhaul - same antifreeze, so its really not so critical after all?

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G Taylor

01-29-2003 08:23:03




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 Re: Re: Anti-freeze How often to change ? in reply to Lee, 01-28-2003 18:44:33  
The glycol maybe ok but the corrosion inhibitor are neutralized due to heat, exposure to dissimilar metals and exposure to oxygen plus carbon dioxide. Replace with non poisonous propylene glycol and use a ph test strip every year. Once the ph is less than 7 replace the antifreeze or the engine components after they corrode. Us demineralized or distilled water. The average person doesn't realize the amount of minerals dissolved in tap water.

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Andy in MN

01-29-2003 16:45:29




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 Re: Re: Re: Anti-freeze How often to change ? in reply to G Taylor, 01-29-2003 08:23:03  
You will be fine with propylen glycol (PG), but there are a couple things to keep in mind. First, the specific gravity (density if you will) of the PG is different from ethylene glycol (EG) so your old anti-freeze tester will no longer work.

Also, the PG does not cool as well as the EG. At one time I was using a Ford 2.5 liter (LRG 425) engine in an industrial generator design. I had the lab tech take a temperature reading in the thermostat houseing running at full load. Then, since we were getting favorable results I had him thermo couple up the entire cooling system to ensure that we were not overheating, which required changing the anti-freeze. When we re-ran the same tests we were 7-8 degrees F greater than before we thermocoupled the cooling system. We chased that problem around for over a week before we noticed that he put PG in the system. After we flushed the system out we refilled with EG and passed all of the tests.

One final note. If you do use PG make sure you flush your system from EG, Prestone claims they don't mix well.

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G Taylor

01-31-2003 15:57:13




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 Re: Re: Re: Re: Anti-freeze How often to change ? in reply to Andy in MN, 01-29-2003 16:45:29  
Depends on the strength ox mix. 100% PG is sometimes used in race engines but flow has to be increased. In most engines a few extra degrees is going to help efficiency.



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Dave K

01-28-2003 14:09:04




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 Re: Anti-freeze How often to change ? in reply to Courtland, 01-28-2003 13:57:38  
Mine has been in there about 3 years, tests good, looks clean.

Dave



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