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Old 12-19-2010, 03:15 AM   #1
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Default Changing Coolant

Hi Guys,
I'm back. I'm a little bit relieved now about my cooling fans. I'll just wait what will happen this coming heat season.

I just changed my oil and oil filter today (I used Castrol GTX and WIX oil filter). My sister'* BF assisted me but never did work. He wants me to learn. Anyway, I'm planning to change my coolant next. And I talked to him about it. I said that I want to bring the car to some shop so they can do the job. And he said I should do it and he will just assist me again. He does work at a mechanic shop and does lots of work at different cars. He said that I technically pay manual labor and it would be expensive. If I (we) can do the job, why bring it in the shop. So, I told him what you guys told me (not the exact words) "bring it in the shop because they will drain, flush and clean the radiator" and then he said "we're just gonna do the same things: put the hose on the radiator cap, run the engine and let it so any object inside it will be flush out." (we're also going to remove the coolant tank and clean the inside) And he said " at least you know what you are doing and what you're putting in your car. If you bring it to a shop, they might just put some cheap stuffs and charge you for a high price."

On the other hand, we discussed about what coolant to use. He said I can really use any coolant I want. Then he mentioned that they dont use the ORANGE coolant at their shop ( I forgot the reason why) and that'* the DEX COOL. I also told him that I'm skeptical about using DEX COOL too. But I told him that the owner'* manual said I should use the DEX COOL and you guys told me too. And he said that DEX COOL is okay/fine. However, we decided that we're going to use http://www.prestone.com/products/print/378?popup=1 for the radiator (add water to make 50/50 mix) and http://www.prestone.com/products/print/410?popup=1 for the coolant tank since these two coolants are okay to mixed with any coolant. Just for clarification, We're not gonna mix these two with the DEX COOL. I think about using these two too because I'm thinking that there might some sort of things that might happen (form sludge, etc because the former coolant was DEX COOL) if I use a coolant that will contrast the DEX COOL (like the other green coolant) and might destroy my radiator even we flush the whole system.

I'm also planning to replace my radiator cap.

My question is should I trust him? Should I listen to this guy'* saying? What are your opinions? Thanks guys.. I'm learning so much.. By the way, I'm looking for my camera but I cant find it. I'll try to find it so I can take pictures of my car and car'* parts..
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Old 12-19-2010, 11:04 AM   #2
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For the most part, coolant is coolant, as long as you use the same type. I used Peak green in mine because I liked the bright green. Be sure to flush all the dex out if your not going to use dex again. The heater core is a good place for some to hide. There is nothing wrong with dex, it'* all personal preference.
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Old 12-19-2010, 11:17 AM   #3
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Use some radiator cleaner to assist you in cleaning out the old dexcool out of the radiator......

Dexcool seems to clog up more then normal green coolant....it say it may last 100K miles yet, it seems to clog up well before that!
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Old 12-19-2010, 11:29 AM   #4
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It'* not unlike any other fluid, it needs to be watched and changed.
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Old 12-19-2010, 02:05 PM   #5
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Hmm.. my coolant tends to naturally replace itself a gallon at a time every time I tear the engine apart : P
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Old 12-19-2010, 11:30 PM   #6
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HAHA! Tom. I would suggest using the universal coolant that mixes safely with Dex as the one you linked is, just to be sure of any hidden pockets that would gel and likely stick in your heater core.

IMO, and many here, Dex is safe as long as it is changed out according to specs. It is when it is left in cars indefinitely that it can become a problem. But then this is true with any coolant. They all need changing. just a matter of following recommendations.
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Old 12-20-2010, 08:54 PM   #7
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Personally, I wouldn't buy prediluted coolant. That'* the company'* way of making you pay for tap water.

Save a couple bucks: grab one jug of 100% coolant and one empty jug. Fill each jug halfway with 100% coolant. Add water to each one. Cap and shake. You now have two jugs for the price of one. Put your savings in the beer fund.
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