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[Z06] Coolant change question..

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Old Jul 1, 2009 | 07:05 PM
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Default Coolant change question..

Isn't it a fairly easy job? Drain the coolant, mix the new coolant 50/50, then refill?
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Old Jul 1, 2009 | 07:31 PM
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Not that fast there buddy, yes the mix is 50 50 do you know what to mix, you need distilled water if you read the manual they calim it best for what I'm not sure but I did it anyway.

And for your refill, make sure you take the small hose off the top radiator, on the passangers side when you fill it, this lets the air out and you don't create the hot spots in the heads.
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Old Jul 1, 2009 | 07:38 PM
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Originally Posted by bob guzzy
Not that fast there buddy, yes the mix is 50 50 do you know what to mix, you need distilled water if you read the manual they calim it best for what I'm not sure but I did it anyway.

And for your refill, make sure you take the small hose off the top radiator, on the passangers side when you fill it, this lets the air out and you don't create the hot spots in the heads.
I'm letting my mechanic change the tranny, brake, and differential fluids, but I think I'm gonna let the dealer change the coolant.
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Old Jul 1, 2009 | 07:52 PM
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If you trust your mechanic to do all that then why not the coolant too? They also sell a 50/50 pre-mix...
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Old Jul 1, 2009 | 07:54 PM
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Also add a bottle of Redline Water Wetter while you are at it. This will drop the temps by 10-15 degrees
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Old Jul 1, 2009 | 08:27 PM
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Don't let them scare you.
You can just drain the radiator and refill with Dexcool and distilled water. I refill the reservoir, then drive the car until up to temperature, and have never had any trouble with air entrapment.
You just need to drive the car, or cycle the engine above idle, so that you get the RPM up enough to get good flow through the system.
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Old Jul 1, 2009 | 10:54 PM
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I bought about 5 gallons of demineralized water when I did my change over. I drained the stock coolant. Refilled with straight water and then drove it for about 20 minutes. Came back and drained that water. Just for good measure I refilled with water and did the 20 minute drive again. Drained that and refilled with 50/50 water dexcool. Just spend a little extra time flushing with the demineralized water and you should be good for a while.
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Old Jul 2, 2009 | 12:42 AM
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Originally Posted by bmg
Also add a bottle of Redline Water Wetter while you are at it. This will drop the temps by 10-15 degrees
Do you have real world results that the above statement is true? I find it hard to believe that a bottle of the Redline product can reduce your temps by that margin.
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Old Jul 4, 2009 | 05:15 AM
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Default Water Wetter

Actually Red Line claims that Water Wetter can reduce coolant tempertures as much as 30 degrees. This would obviously be a case where corrsion and contamination has spoiled the contact with the metal surfaces as related to heat transfer. But in fact Water Wetter does clean the surfaces of the coolant system as to have the coolant make better contact with the surfaces and thus promote optimum heat transfer.
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Old Jul 4, 2009 | 09:00 AM
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Actually Red Line claims
Not that I want to hijack this thread and fly it to Water Wetter but I bought a bottle and have yet to pour it in. If we have to be so picky as to use distilled water in the mix and no one dares mix the "red with the green" why is it acceptable to dump this DiIsopropyl Alcohol Ether, Tri Isopropyl Alcohol DiEther, Sodium Molybdate, Tolyltriazole, PolySiloxane Polymer product into the already much maligned Dexcool?

I believe it was initially used in race engines to enhance the cooling effects of the plain water they ran. Believe me I would have loved to have run 30 degrees cooler on last weeks Bloomington Gold tour or last years 4th of July parade. Is this seat of the pants or does it really work?

http://www.redlineoil.com/products_c...coolantFlash=1

http://www.thetruthaboutcars.com/red...%C2%AE-review/

Last edited by Quick Silver Z; Jul 4, 2009 at 09:03 AM.
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Old Jul 4, 2009 | 09:04 AM
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Originally Posted by 95vettski
Do you have real world results that the above statement is true? I find it hard to believe that a bottle of the Redline product can reduce your temps by that margin.
I thought it was snake oil too, but I recently had my car in for a belt swap and decided to have the coolant changed while they had the car on the lift. They asked if I wanted to run water wetter and I said that I heard about it, but didn't know if it really worked. For $12 I was willing to give it a shot.
Before the coolant change my car would run in the mid to upper 220 range while sitting in heavy traffic. Now it is hard to get it to break 212-213 even in 95 degree heat
30 degree reduction may be a stretch, but I have seen a 10-15 degree reduction in normal temps over the last week of driving in 95+ degree weather
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Old Jul 4, 2009 | 02:26 PM
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Default Advocate...........

Let me also make a statement that I do advocate the use of Water Wetter ( I am a big promoter of Red Line products) in any engine coolant system particulary my collector cars .

If you have a engine temperature problem , find out what it is and don't expect a 'band-aid' to fix it. Clean out the radiator/condensor fins for air flow ( which is so common in the C5s), check the coolant fan sensors, check your coolant to water ratio, tune -up, ect, ect.

I do use Water Wetter to increase the stock coolant system capabilities of my 454 GMC Suburban when I tax it towing our 30 ft Maxum boat that has tendencies to get hot when towing at at higher elevations.

Water Wetter does work to various degrees in various application.
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Old Jul 6, 2009 | 09:35 PM
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Originally Posted by dieseldave56
Let me also make a statement that I do advocate the use of Water Wetter ( I am a big promoter of Red Line products) in any engine coolant system particulary my collector cars .

If you have a engine temperature problem , find out what it is and don't expect a 'band-aid' to fix it. Clean out the radiator/condensor fins for air flow ( which is so common in the C5s), check the coolant fan sensors, check your coolant to water ratio, tune -up, ect, ect.

I do use Water Wetter to increase the stock coolant system capabilities of my 454 GMC Suburban when I tax it towing our 30 ft Maxum boat that has tendencies to get hot when towing at at higher elevations.

Water Wetter does work to various degrees in various application.

Thank you, thats very helpful, i just picked up a 28000 mile 03' and ive been seeing upwards of 222 degree coolant temps. Is there an easy way to clean out the fins in the radiator? It sounds like i really need to flush the system out as well. Some people have suggested a 160 degree thermostat would help but im not sure its necessary.
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