Tech Team
Join Date: Sep 2006
Posts: 69
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coolant ?
new smallblock aluminum heads and radiator whats the best coolant?
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Senior Tech
Patrick
Join Date: Jun 2005
Location: Quitman Georgia
Posts: 2,519
Re: coolant ?
Definitely not Dexcool!
69RS/SS,383,10:1cr,4.10,60ft1.6sec,1/[email protected],1/[email protected],Vicjr,RPMheads,750dp, Proform main body, cam,246*-250*@.050,.510,522,1.6rr,700r4,3200stall
383 IS SOLD!
Building a 489BBC
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Gold Lifetime Member 
Jim
Join Date: Dec 1999
Location: Yorkville, Illinois USA
Posts: 22,121
Re: coolant ?
old fashioned green stuff!
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New website for my vert is coming together. Do ya like the slide show on the home page?
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Gold Lifetime Member
Skip
Join Date: Feb 2008
Location: CA
Posts: 6,628
Re: coolant ?
Are you guys serious (no red)... Dam good post sense im going with aluminum heads.
I NEED TO HIT THE LOTTERY
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Moderator
Bill
Join Date: Aug 1998
Location: Waldorf Md. USA
Posts: 3,290
Re: coolant ?
sic,
Any modern coolant should be fine. Almost every car manufactured nowdays has aluminum cylinder head(s) so the coolants are designed for that.
Any modern coolant should be fine. Almost every car manufactured nowdays has aluminum cylinder head(s) so the coolants are designed for that.
Bill Koustenis
Owner
Advanced Automotive Machine
Waldorf Md
1971 Chevelle "Heavy Chevy" original owner
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Senior Tech
Join Date: May 2001
Location: Ashby,MN, USA
Posts: 8,305
Re: coolant ?
go green- this is about the only situation where you will hear me give that advice...
you don't plan sincerity.
you have to make it up on the spot.
wanna hear about 20 years ago when i was too smart to know any better?
Gold Lifetime Member
Don
Join Date: Jan 2005
Location: 2 Dog Town in West Texas
Posts: 11,154
Re: coolant ?
Been using Dex for 3 years so far, lots of cruise miles, copper radiator , alloy heads and iron block. Have not seen any internal block material issues. Yes, I know about the external corrosion leaks.
Don
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968
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Senior Tech
Dave
Join Date: May 2001
Location: Michigan
Posts: 2,920
Re: coolant ?
Another vote to avoid Dexcool at all costs. The only vehicle I have with it is my Grand Prix which came new with it and every two years I have to have the cooling system flushed because it creates so much sludge. My other 5 cars, Prestone green, no problems with any of these vehicles ever and some have owned for 12 years and 160,000 miles only having changed the coolant once in that vehicle, not for sludge. I don't know why the Dexcool is so bad in a daily driver, but I don't hear too many people who like it around these parts.
"..............what, and get out of aviation??"
Banned
Ron
Join Date: Jul 2005
Location: Dearborn Heights, MI
Posts: 3,176
Re: coolant ?
green, green, green!!
Gold Lifetime Member
BILL
Join Date: Oct 2007
Location: HENDERSONVILLE N.C.
Posts: 9,352
Re: coolant ?
Prestone baby!!!! No ifs ands or butts!!!!
Senior Tech
Charlie
Join Date: May 2007
Location: Baltimore Maryland
Posts: 3,759
Re: coolant ?
As long as you maintain your cooling system as it should be, then the green stuff is more than capable of doing the job. Go online and read the lawsuits concerning the Dexcool coolant. Although, some say the "Dexcool" formula you get from your local parts store may not be same exact formula as that from the dealer, but why take the chance. I use a 60% water/40% coolant mix of the green stuff and I have never had any issues. Knock on wood! 
The real issues come from neglecting the system. Keep it up to date and you will be fine.
The real issues come from neglecting the system. Keep it up to date and you will be fine.
Charlie Knudsen 67 Camaro RS/SS 350 TKO 600, 4.10's, AFR 195 Street Heads, Comp 270H, Rhoads Lifters, Crane Ignition, Pertronix Dizzy, Performer RPM Q-Jet, Heavily Modified Q-Jet, Hooker Comp Headers, MagnaFlow 2 1/2", 144 Decibles(Alpine CDA-7998 Head Unit, RF X7 and RF 750X Amps, MB Quart Mid's & High's, Kicker L7 12" Solo Barics)
Gold Lifetime Member
Skip
Join Date: Feb 2008
Location: CA
Posts: 6,628
Re: coolant ?
Quote:
Originally Posted by 67CamaroRS/SS
View Post
As long as you maintain your cooling system as it should be, then the green stuff is more than capable of doing the job. Go online and read the lawsuits concerning the Dexcool coolant. Although, some say the "Dexcool" formula you get from your local parts store may not be same exact formula as that from the dealer, but why take the chance. I use a 60% water/40% coolant mix of the green stuff and I have never had any issues. Knock on wood! The real issues come from neglecting the system. Keep it up to date and you will be fine.
The real issues come from neglecting the system. Keep it up to date and you will be fine.I NEED TO HIT THE LOTTERY
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Tech Team
Dave
Join Date: Dec 2008
Location: Vineland NJ
Posts: 95
Re: coolant ?
No matter what brand you use, always mix with "distilled" water as it contains no minerals. Keeps cooling systems spotless.
Senior Tech
Ray
Join Date: Sep 2000
Location: Central FL
Posts: 271
Re: coolant ?
I agree with Dave on using distilled water with whatever type of coolant you choose.
Or you could skip the water all together and go with Evans NPG+ Coolant. (Lots of reading there.)
Ray
Or you could skip the water all together and go with Evans NPG+ Coolant. (Lots of reading there.)
Ray
Senior Tech
Charlie
Join Date: May 2007
Location: Baltimore Maryland
Posts: 3,759
Re: coolant ?
If I'm not mistaken, Dexcool is a Propylene Glycol product and there are many documented issues with Propylene Glycol. The "green stuff" is Ethylene Glycol. After reading some of the horror stories about Propylene Glycol, I would be hesitant in using ANY Propylene Glycol based product, but that's just my opinion.
THE DISTILLED WATER IS A MUST!!!
THE DISTILLED WATER IS A MUST!!!
Charlie Knudsen 67 Camaro RS/SS 350 TKO 600, 4.10's, AFR 195 Street Heads, Comp 270H, Rhoads Lifters, Crane Ignition, Pertronix Dizzy, Performer RPM Q-Jet, Heavily Modified Q-Jet, Hooker Comp Headers, MagnaFlow 2 1/2", 144 Decibles(Alpine CDA-7998 Head Unit, RF X7 and RF 750X Amps, MB Quart Mid's & High's, Kicker L7 12" Solo Barics)
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