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#1
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Cold Case Radiator?
I have an aluminum cold case radiator for my 67 GTO and was wondering what type coolant to use in it.
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Remember no one is perfect. Everyone's butt has a crack in it! |
#2
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should just take the standard green stuff.... stay away from orange dexcool or the pink stuff designed for foreign cars.
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#3
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Since you are in GA. Do you even need anti freeze? I am in MN and only use my car in summer months. I run straight softened water with a bottle of hyperlube or water wetter. Cools better than antifreeze and keeps the water sparkling clean. If stored in a garage, it actually needs to get pretty cold outside before you are in danger of radiator freezing up.
Sent from my SM-G965U using Tapatalk
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68 Firebird-- Street/Strip - 400/461 Eagle Forged Bottom End & Ross Flat top pistons. KRE 325 CFM D port, Ultradyne 263/271 @.050, .4267 lift. Crower Solid roller lifters and 1.65 stainless rockers. Quickfuel 1000 on Torker2 intake and 2" open spacer. Hedman 1.75" headers. TH400 w/brake. Ford 9" w/3.80 gears & 28x9 Hoosier pro bracket drag radial. Best ET: 1.35 60ft, 6.29 @ 107.20 mph, 9.99 @132.33 mph. 3,300 race weight |
#4
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From the Cold Case warranty info..."Cold Case recommends using a green 50/50 coolant mixed with distilled water. Using other mixtures may void the warranty."
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#5
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Since you are in GA. Do you even need anti freeze?
You sure do. I was in the Navy in northern Florida. I had a 73 Nova SS with just water and the freeze plugs popped one winter. |
#6
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Besides lowering the freezing point antifreeze also raises the boiling point.
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#7
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I wouldn’t use softened water - don’t they use salt for that?
I just use the green glycol.
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1965 Pontiac LeMans. M21, 3.73 in a 12 bolt, Kauffman 461. |
#8
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I use distilled water and a few water wetters. It does the same as antifreeze, but if you have an issue at the track you are not dropping oil for the next guy. Most tracks appreciate that. If it's a full street car distilled water and regular antifreeze is fine
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#9
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X2 on distilled water and regular antifreeze
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Chris D 69 GTO Liberty Blue/dark blue 467, 850 Holley, T2, Edelbrock Dport 310cfm w Ram Air manifolds, HFT 245/251D .561/.594L, T400, 9" w 3.50s 3905lbs 11.59@ 114, 1.57/ 60' |
#10
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I know this topic has been beat to death over the years, but I have also read that tap/soft water was preferred over distilled.
I have used tap and distilled along with green and orange coolant (never together of course) for the past 36 years and never an issue- so I presume there is plenty of wiggle room here. Sent from my SM-G965U using Tapatalk
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68 Firebird-- Street/Strip - 400/461 Eagle Forged Bottom End & Ross Flat top pistons. KRE 325 CFM D port, Ultradyne 263/271 @.050, .4267 lift. Crower Solid roller lifters and 1.65 stainless rockers. Quickfuel 1000 on Torker2 intake and 2" open spacer. Hedman 1.75" headers. TH400 w/brake. Ford 9" w/3.80 gears & 28x9 Hoosier pro bracket drag radial. Best ET: 1.35 60ft, 6.29 @ 107.20 mph, 9.99 @132.33 mph. 3,300 race weight |
#11
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Quote:
I know that tap is recommended for people to drink because we benefit from the added minerals, but I've never heard it recommended in an automotive setting.
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1966 Pontiac GTO (restoration thread) 1998 BMW 328is (track rat) 2023 Subaru Crosstrek Limited (daily) View my photos: Caught in the Wild |
#12
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the confusion on tap/soft vs distilled is from a couple unofficial articles circulating on the interwebs, & the newer hyperlube stuff actually says that on the bottle... there may be some benefits & truth to both types of water but unless its an emergency or i was a young kid not knowing better, i wouldnt use tap water today. & soft water doesnt put salt into the water, it uses the sodium pellets to remove hard minerals like iron etc, but doesnt actually add the salt into the water.
but i agree distilled water is best & has been used & recommended by auto manufacturers & aftermarket cooling system companies for decades. my newer toyota owners manual says to use distilled as well. & if modern companies like cold case, be-cool, griffin, champion etc say to use distilled water, that is what i will use. #1 for warranty & #2 because i trust what they say over a random guy on a auto forum or newer $6 magical cooling potion. |
#13
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I have used the hyperlube additive many times (with no antifreeze), so likely where i read the tap water thing. Of course a person has to use common sense as well. I would never use my straight well water , which is high in iron, nor would I use city water that is high in calcium and lime.
Last few years I have been using soft tap water for convenience and aluminum radiator stays super clean, but distilled is certainly cheap enough and readily available! Sent from my SM-G965U using Tapatalk
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68 Firebird-- Street/Strip - 400/461 Eagle Forged Bottom End & Ross Flat top pistons. KRE 325 CFM D port, Ultradyne 263/271 @.050, .4267 lift. Crower Solid roller lifters and 1.65 stainless rockers. Quickfuel 1000 on Torker2 intake and 2" open spacer. Hedman 1.75" headers. TH400 w/brake. Ford 9" w/3.80 gears & 28x9 Hoosier pro bracket drag radial. Best ET: 1.35 60ft, 6.29 @ 107.20 mph, 9.99 @132.33 mph. 3,300 race weight |
#14
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GM also recommends distilled water for use with their coolant.
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