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Using the best coolant?

Everytime they tell me its ready, it never really is...
I'm trying to not let it bother me. Tomorrow I'll make a couple of tech support calls, and be on my way to getting it fixed up. I feel a LOT better knowing that we weren't cooking the 421 yesterday, that was just rebuilt about 3½ years ago, and the 290° and almost to the "H" on the water temperature gauge was a false reading. It was a really bad experience in and of itself, plus running out of gas because that gauge wasn't setup properly, and my wife's disappointment and frustration, and that it should have been a very happy time of celebration...
I told "Mrs. Impatient" she should wait and let the guy working on my Roadrunner do everything her car needs...
Well, I think the rest of the work on the GTO is going to be done by the guy who is doing a great job on my Roadrunner (who was supposed to do everything on the GTO) Besides, he is the one who installed the Quick Performance 9" rear axle assembly to begin with, and the associated rear suspension upgrades, so the replacement housing and coilovers certainly should be done by him! I got a Hydramax hydraulic TO bearing kit for the TKO600 going in her car, because if the HitMaster launch control works as well as I expect it to, once I get it dialed in on her car, that will make launching the GTO much, much easier and better for her. We need to beat my dad's 12.8 he ran in his 65 GTO, and I know we have more motor than he did, and a lot of other superior hardware. I just need to get the driver to do what is required...
 
A couple of you guys are making my brain hurt! :rolleyes:

Lets get back to basics. Iron head, iron block, Conventional Green antifreeze is what you want. The manufacturer has always recommended a 50/50 mix. Having cooling problems, try a ratio with more water if your climate allows for it. Water displaces more heat faster. Distilled water is better for keeping corrosion at bay.

The main reason for these engines running hotter is using 10% ethanol fuels. Second thing is not having enough timing creating more combustion heat. Third thing is cooling system not being set up as it should. Don't stray too much from the factory setup. A mechanical fan with a shroud works the best along with the factory water pump.

Too many threads on this topic and each time it's someone straying from the factory setup.

Now if you're using aluminium heads on a iron block, I'm not sure what would be recommended for coolant. This is why manufacturers had to change the composition of antifreeze over the years. Conventional Green was probably too harsh on the aluminium heads?

For Bob and Nate, this is what's on the Conventional Green (Auto Zone) jug.
20200803_004258.jpg
 
I’ll pass on Lennon Jrs. ideas, green for me unless it calls for something else. Antifreeze is cheap and clogged heater cores stink so it gets changed regardless of flavor every 2/3 years
 
What is you guys opinion on this Peak product that claims it can be mixed with any color coolant? It is yellow and missing the diptassium phosphate that is in the green stuff.

20200803_065338.jpg 20200803_065323.jpg
 
Now what about adding aluminum to the mix? Back when green coolant was the norm the manufacturers were not using aluminum radiators, heads, water pump hardware, intakes. They switched coolants when aluminum was used from the factory.
 
What is you guys opinion on this Peak product that claims it can be mixed with any color coolant? It is yellow and missing the diptassium phosphate that is in the green stuff.

View attachment 983478 View attachment 983479
I wouldn't mix. The color is an indicator of the corrosion inhibitor type. We know for sure you can't mix with NOAT so any claim that it can mix with anything sounds like BS.
 
What is you guys opinion on this Peak product that claims it can be mixed with any color coolant? It is yellow and missing the diptassium phosphate that is in the green stuff.

View attachment 983478 View attachment 983479

The secret ingredient is the "proprietary inhibitors"..... Perhaps this is what the three witches used when they were brewing their magic elixir (from Shakespeare's Taming of the Shrew).....eye of newt is very powerful ingredient.
Having worked in a glycol production facility, ethylene glycol and propylene are both colorless as produced. The dye color is added after formulation by the blender to distinguish between Dexcool and the "green" stuff plus what ever corrosion inhibitors the formulator needed.
BOB RENTON
 
So what do you guys think is the best coolant to use in a iron block aluminum head stroker motor that are so popular nowadays?
 
So what do you guys think is the best coolant to use in a iron block aluminum head stroker motor that are so popular nowadays?
:popcorn2::popcorn2::popcorn2:
...add an aluminum radiator to the mix...
AND I'll ask:
I'm switching to a Cold Case aluminum radiator now, but I still have iron block and heads.
When the aluminum cylinder heads equipped aluminum BMP 541 stroker block go in, I'll have the "Trifecta" aluminum heads, block, radiator...
What is the best coolant to use with all that ALUMINUM?

:thankyou:
 
:popcorn2::popcorn2::popcorn2:
...add an aluminum radiator to the mix...
AND I'll ask:
I'm switching to a Cold Case aluminum radiator now, but I still have iron block and heads.
When the aluminum cylinder heads equipped aluminum BMP 541 stroker block go in, I'll have the "Trifecta" aluminum heads, block, radiator...
What is the best coolant to use with all that ALUMINUM?

:thankyou:
And that my friend is the $64,000 question for the engineers on here. So glad we have such a diverse membership on this site.
 
IMO...
Perhaps consider using what GM uses in their vehicles' engines equipped with Aluminum blocks, heads and radiators, which is Dexcool at 50% concentration coolant to water ratio. I'm not sure what Ford or Fiat-Chrysler uses, especially with the Hellcat vehicles, which, if I had to guess, would be similar. What works for them should be considered, especially after many engineering hours and life testing have been done. But, there is the next door's neighbor's brother-in-law's cousin's best buddy faction who claim success with other products and concentrations. I'd go with what the manufacturer uses.
The other unknown component of the equation is what is the SPECIFIC ALLOY (example 6061-T6) of the aftermarket equipment, other than aluminum. Different alloys have different corrosion resistance and rates and should be determined b4 deciding.
BOB RENTON
 
I had plenty of deathcool experiences with my 2001 impala. My first and last government motors car. No thank you.
 
The secret ingredient is the "proprietary inhibitors"..... Perhaps this is what the three witches used when they were brewing their magic elixir (from Shakespeare's Taming of the Shrew).....eye of newt is very powerful ingredient.
Having worked in a glycol production facility, ethylene glycol and propylene are both colorless as produced. The dye color is added after formulation by the blender to distinguish between Dexcool and the "green" stuff plus what ever corrosion inhibitors the formulator needed.
BOB RENTON
Macbeth....sorry, I'm a bit of a nerd.
 
what is the SPECIFIC ALLOY (example 6061-T6) of the aftermarket equipmen
I know the BMP block is 357-T6, which is a stronger aluminum alloy, ideal for block material. The TrickFlow 270 heads are A356-T61 aluminum.
 
Macbeth....sorry, I'm a bit of a nerd.
I stand corrected.....You are correct it is Macbeth......thank you for the rescue....

ACT I SCENE I
A desert place. [Thunder and lightning. Enter three Witches]
First WitchWhen shall we three meet againIn thunder, lightning, or in rain?
Second WitchWhen the hurlyburly's done,When the battle's lost and won.T
hird WitchThat will be ere the set of sun.5
First WitchWhere the place?
Second WitchUpon the heath.
Third WitchThere to meet with Macbeth.
First WitchI come, graymalkin!
Second WitchPaddock calls.10
Third WitchAnon!
ALLFair is foul, and foul is fair:Hover through the fog and filthy air.[Exeunt]
Great reading...
BOB RENTON
 
Dexcool got a bad rap, gelling up and clogging the works. I remember reading that it must be kept away from oxygen, GM used a closed cooling system from the factory. Is all that true or not? I dont know. I would be cautious using Dexcool in an old car. The system is not sealed.

Next time I am at the store I am going to see which coolants, if any, state they are recommended for use with aluminum.
 
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