Coolant adequate for copper radiator and M30 aluminium head engines

[deQuincey]

From producers perspective:

IAT (Inorganic Additive Technology) - old technology not suitable for aluminum but good for copper based (soldered) - should be exchanged every 2 years
OAT (Organic Acid Technology) - can dissolve solder, so it is not suitable for copper - 5 years lifetime
HOAT lub SiOAT - new version combining IAT (silicon) and OAT (organic acids) - pushing out IAT fluids
NMOAT - for industry machines. Typically universal and compatible with most of materials used in heating/cooling installations. 7 years of lifetime

excellent information;
BTW
do you know where does the BMW coolant type 87 sits in your list ?

 

[Krzysztof]

This can put more light on the topic:

 

[deQuincey]

this valvoline is HOAT and can be used in Si-OAT aplications

 

[deQuincey]

another interesting product, as it is G11 declared and a good product brand is HEPU:

 

[deQuincey]

and finally a FEBI

 

[Arde]

This can put more light on the topic:

Cool video.
Short story, blue is better, slightly higher boiling point. I may drink some to increase mine...

 

[deQuincey]

Done....

used bmw 87
mixed at 50% distilled water

 

[otter74]

Well, that's a lot of stuff I didn't know. My E12 came to me with modern blue coolant in it.

 

[JFENG]

The safety-kleen most violated states:

• Recommended for heavy duty diesel applications for 3 years/300K miles or 6 years/600K miles with the addition of an extender.

And

• Prevents corrosion of aluminum, brass, cast iron, copper, solder and steel
• Provides excellent high-temperature aluminum protection
• Does not contain Amine, Phosphate and Silicate

Nmoat
The idea of 6 years between coolant changes is very appealing.

John