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Message: Re: I guess the really important thing is that they don't gel when mixed!
Changed By: Pedro (Odessa, FL)
Change Date: July 07, 2014 08:03AM
Re: I guess the really important thing is that they don't gel when mixed!
Change Date: July 07, 2014 08:03AM
Re: I guess the really important thing is that they don't gel when mixed!
The reason for the gelling is the following:
In the old days of Porsche water cooling (the 80s),
most of the engine blocks were made of iron.
Iron blocks need phosphate and silicate to form a thin layer on the metal to protect it from oxidation.
By the same token, phosphate and silicate we're not good for aluminum blocks which Porsche was pioneering.
So, iron and aluminum blocks needed different components in their coolant to protect the innards.
But, the two types of coolant with phosphate and silicate and without phosphate and silicate are not compatible and may gel when mixed.
It's not Porsche coolant that gelled, it was the disparity of the solutions.
Now a days most of the coolants on the market, even those safe for iron blocks are phosphate and silicate free
They will state so on their label and will also state that they are safe to use with any other coolant.
Hope this helps explain it a bit.
For more detailed info, here's one of my Tech Articles on that same subject:
http://pedrosgarage.com/Site_5/Coolant_Antifreeze.html
Happy Cooling
Pedro
In the old days of Porsche water cooling (the 80s),
most of the engine blocks were made of iron.
Iron blocks need phosphate and silicate to form a thin layer on the metal to protect it from oxidation.
By the same token, phosphate and silicate we're not good for aluminum blocks which Porsche was pioneering.
So, iron and aluminum blocks needed different components in their coolant to protect the innards.
But, the two types of coolant with phosphate and silicate and without phosphate and silicate are not compatible and may gel when mixed.
It's not Porsche coolant that gelled, it was the disparity of the solutions.
Now a days most of the coolants on the market, even those safe for iron blocks are phosphate and silicate free
They will state so on their label and will also state that they are safe to use with any other coolant.
Hope this helps explain it a bit.
For more detailed info, here's one of my Tech Articles on that same subject:
http://pedrosgarage.com/Site_5/Coolant_Antifreeze.html
Happy Cooling
Pedro
Original Message
Author: Pedro (Odessa, FL)Date: July 07, 2014 08:01AM
Re: I guess the really important thing is that they don't gel when mixed!
The reason for the gelling is the following:
In the old days of Porsche water cooling (the 80s),
most of the engine blocks were made of iron.
Iron blocks need phosphate and silicate to form a thin layer on the metal to protect it from oxidation.
By the same token, phosphate and silicate we're not good for aluminum blocks which Porsche was pioneering.
So, iron and aluminum blocks needed different components in their coolant to protect the innards.
But, the two types of coolant with phosphate and silicate and without phosphate and silicate are not compatible and may gel when mixed.
It's not Porsche coolant that gelled, it was the disparity of the solutions.
Now a days most of the coolants on the market, even those safe for iron blocks are phosphate and silicate free
They will state so on their label and will also state that they are safe to use with any other coolant.
Hope this helps explain it a bit.
For more detailed info, here's one of my Tech Articles on that same subject:
Happy Cooling
Pedro
In the old days of Porsche water cooling (the 80s),
most of the engine blocks were made of iron.
Iron blocks need phosphate and silicate to form a thin layer on the metal to protect it from oxidation.
By the same token, phosphate and silicate we're not good for aluminum blocks which Porsche was pioneering.
So, iron and aluminum blocks needed different components in their coolant to protect the innards.
But, the two types of coolant with phosphate and silicate and without phosphate and silicate are not compatible and may gel when mixed.
It's not Porsche coolant that gelled, it was the disparity of the solutions.
Now a days most of the coolants on the market, even those safe for iron blocks are phosphate and silicate free
They will state so on their label and will also state that they are safe to use with any other coolant.
Hope this helps explain it a bit.
For more detailed info, here's one of my Tech Articles on that same subject:
Happy Cooling
Pedro