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Re: Replacing Old School Green [Re: FordCapriDriver] #5227606 10/01/19 12:57 PM
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Trav Offline
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Originally Posted by FordCapriDriver
0 Aluminium loss is hard to believe.


Why is it hard to believe? They are a very reputable company that manufactures the engine and pays for the testing and warranty the machine and they have not retracted that info or corrected it and it has been out for years. Having used the product for years in every type of mixed metal engine with copper, aluminum, plastic components without any corrosion or issues I believe it.

OP
I have no idea what brands they tested against but it is the real deal and not a dexcool clone but is AFAIK a propitiatory formula.


ASE L1, Master. Deutsch Meisterbrief.
Re: Replacing Old School Green [Re: Nick1994] #5227971 10/01/19 08:34 PM
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Use the Zerex Green and you don't have to worry about getting all the old in-compatable coolant out.

Re: Replacing Old School Green [Re: Nick1994] #5228022 10/01/19 10:55 PM
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G-05 and Conventional green do not have any miscibility problems so if you have a little green left in the system it should not cause problems.


1975 Ford Capri II Ghia 3000 V6 - Repsol Elite Super 20W-50
1988 Ford Escort XR3i Cabrio - Shell Rimula R4X 15W-40 HDEO

Re: Replacing Old School Green [Re: FordCapriDriver] #5228847 10/02/19 07:30 PM
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Warstud Offline
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Originally Posted by FordCapriDriver
G-05 and Conventional green do not have any miscibility problems so if you have a little green left in the system it should not cause problems.

If both coolants are good for 5 years....why switch to G-05 when the Green is already proven safe to use ?

Re: Replacing Old School Green [Re: Nick1994] #5229029 10/03/19 02:23 AM
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G-05 is certainly superior, as it also has OAT inhibitors plus stuff like Molybdate which is excellent at protecting solder.
A typical Conventional green formula would be : Silicate + Phosphate + Azole + Borate.
G-05 is Silicate + Nitrate + Molybdate + OAT, Nitrate protects aluminium well and prevents cavitation, Phosphate on the other hand isn't as good at protecting Aluminium and tends to create deposits which Nitrate toes not.


1975 Ford Capri II Ghia 3000 V6 - Repsol Elite Super 20W-50
1988 Ford Escort XR3i Cabrio - Shell Rimula R4X 15W-40 HDEO

Re: Replacing Old School Green [Re: Nick1994] #5229053 10/03/19 04:06 AM
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Quote
Phosphate on the other hand isn't as good at protecting Aluminium and tends to create deposits....
The Asian vehicles I've used PHoat AFs in, the radiators have stayed pristine looking even at 100k+ miles. I have no idea the source of that information, but ime Phosphated Oat AFs do a great job of protecting aluminum with no significant or noticeable deposits over their recommended long service interval. And I don't read many issues on this subforum with folks using them in thier Asian vehicles. Usually the opposite in fact. That and the Asians vehicles, don't recommend or use silicates in thier AF.

To topic, already been some suggestions, all which seem fine (none w/2eha). I'd likely do a distilled flush series before making a change, but that's just me.


Re: Replacing Old School Green [Re: Nick1994] #5229103 10/03/19 06:08 AM
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It's the OAT part of the coolant mainly keeping the Alu pristine, not the Phosphate.
Silicate undoubtedly protects Alu better than Phosphate.

Silicates were not commonplace in automotive coolants until the manufacturers began using Aluminium heads and such, when they did they found that the old school Phosphate based formulas they were using did not protect Aluminium well.


1975 Ford Capri II Ghia 3000 V6 - Repsol Elite Super 20W-50
1988 Ford Escort XR3i Cabrio - Shell Rimula R4X 15W-40 HDEO

Re: Replacing Old School Green [Re: Nick1994] #5229114 10/03/19 06:26 AM
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It's commonly known that silicates are very susceptible to silicate dropout/fallout. Old school green a prime example and it's been around a long time and used in non aluminum heads and blocks. In the US I'm unaware of old school IAT green using phosphate as the main inhibitor. Silicate drop out is a main reason that newer IAT AF like the aforementioned Zerex green is a low silicate formula. As is G-05 Hoat.

As noted all the Asian vehicle manufactures prefer Phosphates to silicates. It seems the newer Prestone with CoreGuard found similar. So, based on my experience with Phoats and the Asian vehicle manufacturers recs I'll agree to disagree. As this is off topic, I'll leave it at that.

Re: Replacing Old School Green [Re: Nick1994] #5229193 10/03/19 08:21 AM
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Modern Silicate containing coolants don't really have the dropout problem they used to have, there are compounds which control that and yes modern Silicate coolants have approximately a 25-30% lower concentration than they used to.
VW for example went back from a full OAT ( G12 and G12+ ) to G12++ and their current G13 which use Silicates.
But yeah let's leave this as it's off topic


1975 Ford Capri II Ghia 3000 V6 - Repsol Elite Super 20W-50
1988 Ford Escort XR3i Cabrio - Shell Rimula R4X 15W-40 HDEO

Re: Replacing Old School Green [Re: Nick1994] #5231067 10/05/19 11:09 AM
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If G-05 is so great...... then why did Chrysler and Ford switch to Dex-Cool ? And you know that Dex-Cool doesn't have the best reputation.

Re: Replacing Old School Green [Re: Warstud] #5235402 10/09/19 10:21 PM
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Originally Posted by Warstud
If G-05 is so great...... then why did Chrysler and Ford switch to Dex-Cool ? And you know that Dex-Cool doesn't have the best reputation.


Depends... Death-Cool clones contain 2eha, and will eat your cooling system/gaskets, unless they are meant for Dex-cool.

Dex-cool ditched 2eha for awhile, and the problems went away for the gasket melting.

Dex is cheap and effective, G05 is better but more expensive.

Pre-Stool with 2eha will never go in anything I own or service, unless it's factory fill was Dex-Cool. 'Cor-guard' on the front, and 2eha on the back.

Last edited by gamefoo21; 10/09/19 10:22 PM.
Re: Replacing Old School Green [Re: Nick1994] #5235453 10/10/19 12:27 AM
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2-Eha containing coolants are a bad idea if the original coolant that the engine came with did not use 2-Eha.
Even more so if the engine in question uses soldered radiators in which case not only will the coolant swell the seals and gaskets it will also rather quickly dissolve the lead in the solder causing a leak.

Non 2-Eha OAT / HOAT coolants on the other hand have shown to be ok in soldered radiators and don't seem to swell seals or gaskets.


1975 Ford Capri II Ghia 3000 V6 - Repsol Elite Super 20W-50
1988 Ford Escort XR3i Cabrio - Shell Rimula R4X 15W-40 HDEO

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