Aluminum Radiator fluid question - Team Camaro Tech
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post #1 of 12 (permalink) Old May 4th, 11, 05:49 PM Thread Starter
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Kevin
 
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Aluminum Radiator fluid question

I just put in a new Ron Davis aluminum radiator and was wondering if there is any differant fluids that belong in the aluminum radiators. I was told regular prestone and distilled water mix. Sound right ? or anything better?

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post #2 of 12 (permalink) Old May 4th, 11, 06:37 PM
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Re: Aluminum Radiator fluid question

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Originally Posted by 69Rook View Post
I just put in a new Ron Davis aluminum radiator and was wondering if there is any differant fluids that belong in the aluminum radiators. I was told regular prestone and distilled water mix. Sound right ? or anything better?

383 with iron heads
Also, anybody using anodes?

Rob

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post #3 of 12 (permalink) Old May 4th, 11, 08:20 PM
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Steiner
 
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Re: Aluminum Radiator fluid question

I just use 50/50 distilled water and the SuperTech Extended Life "mixes with any coolant" brand from Wal-Mart. Have used it alone, mixed with a Dex-Cool vehicle, and on a factory filled Mopar vehicle with zero issues.

Anodes can be hit or miss but are cheap and extra insurance. They are meant to be a sacrificial metal instead of the aluminum if you have an issue with electrolysis which is when the coolant carries electricity and causes a charge across the aluminum. Maintaining good grounds to prevent that is the best way to prevent it but an anode can be considered a back up.

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post #4 of 12 (permalink) Old May 4th, 11, 08:53 PM Thread Starter
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Kevin
 
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Re: Aluminum Radiator fluid question

Are "anodes" an additive thats added to the radiator? I do have a warning on the radiator to check for electrolysis.

Should I run a copper ground from the radiator to the frame?
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post #5 of 12 (permalink) Old May 4th, 11, 09:34 PM
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Re: Aluminum Radiator fluid question

Quote:
Originally Posted by 69Rook View Post
Are "anodes" an additive thats added to the radiator? I do have a warning on the radiator to check for electrolysis.

Should I run a copper ground from the radiator to the frame?
If you have electrolysis, grounding the radiator increases the chance for corrosion since the stray voltage in the coolant will try to conduct to ground through the radiator if it's the path of least resistance.

You check for electrolysis by putting a meter lead on the battery negative with the car and all accessories running, and then submerging the other lead in the coolant. The value should be as low as possible, 0.15V AC or DC is considered the action level for aluminum by some standards.

The best things you can do is maintain the electrical system with good grounds and keep your coolant flushed and changed out every couple of years. The grounding issue is obvious and the coolant change helps get rid of it before it starts to turn acidic in which case it the electrolytic properties get stronger and it becomes more conductive.

'69 Camaro
Dart 400-AFR 195-224/224 HR-Powerjection III TB with F.A.S.T. Sportsman XFI
TKO 600-Moser 3.42-Detroit Truetrac
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post #6 of 12 (permalink) Old May 4th, 11, 10:26 PM
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Re: Aluminum Radiator fluid question

Distilled water and Hyper Lube http://www.hyperlube.com/c3/Super-Coolant-c8.html is what I have run for years, no issues since making the switch. No rust in the block and no scale or corrosion in the radiator. No need for anti freeze unless you are in a climate that freezing is an issue. The car will cool better as well.

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post #7 of 12 (permalink) Old May 4th, 11, 11:46 PM
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Re: Aluminum Radiator fluid question

Kevin,
Factory cars have been using aluminum radiators for 30+ years, so just about any good coolant with distilled water should be A-OK. Just for fun, I'm running Dex-cool and distilled water in my '68 with aluminum radiator for the past 10 years with no problems.

I really like Steiner's recommendation to check for voltage potential in your radiator coolant - I am going to do it!

Regards, Steve
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post #8 of 12 (permalink) Old May 5th, 11, 02:02 PM Thread Starter
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Re: Aluminum Radiator fluid question

thanks all, never thought so much about coolant before. I will go with your suggestions and also do the test. ...





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post #9 of 12 (permalink) Old May 5th, 11, 08:36 PM
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Re: Aluminum Radiator fluid question

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Originally Posted by satz28 View Post
Also, anybody using anodes?
I have one in my Ron Davis sure cant hurt and any extra insurance is good insurance for what the radiator costs!

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post #10 of 12 (permalink) Old May 6th, 11, 09:32 AM
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Re: Aluminum Radiator fluid question

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Originally Posted by satz28 View Post
Also, anybody using anodes?
When I installed a 200 4R trans, BTO suggested going to an aluminum radiator for better cooling. Bought the alum radiator from SUMMIT. I cliked on their "suggested parts" tab and a zinc anode was recommended.Bought it.It screws into where the petcock is at the base of the radiator. Yes, I am an easy upsell. That was three years ago and there is no galvanic action visible. Knock on wood.

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post #11 of 12 (permalink) Old May 6th, 11, 09:35 AM Thread Starter
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Kevin
 
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Re: Aluminum Radiator fluid question

Thanks, just ordered one (now that I know what it is).
Just replace it where the drain plug goes? too easy.
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post #12 of 12 (permalink) Old May 6th, 11, 06:15 PM
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Steiner
 
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Re: Aluminum Radiator fluid question

Yep, pretty easy. Also remember OEM's have been using plastic end tanks for awhile so many radiators aren't ground paths like ours are. If you've got electrolysis, the heater core and aluminum radiator are going to be the most likely places for it to show up since they're so thin. If your two metals where the current is passing are closer on the galvanic scale it's not much of an issue but aluminum and iron aren't so close.

'69 Camaro
Dart 400-AFR 195-224/224 HR-Powerjection III TB with F.A.S.T. Sportsman XFI
TKO 600-Moser 3.42-Detroit Truetrac
500hp/538lbft

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