Xantonin you asked about Toyota Red vs Toyota Pink coolant in the other thread.
Toyota Red Coolant is a "Long Life" coolant. It is considered a Organic Acid Technology (or OAT).
Toyota Pink Coolant is a "Super Long Life" coolant. Hybrid Organic Acid Technology (aka HOAT). It offers longer service intervals then the regular Toyota Red. I believe it was introduced it 2002 and made it's way to the full Toyota line up around 2006.
In my owners manual it stated:
Quote:
Coolant type selection
Use of improper coolants may damage your engine cooling system.
Only use "Toyota Super Long Life Coolant" or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology. (Coolant with long-life hybrid organic acid technology is a combination of low phosphates and organic acids.)
Mixtures for USA and Canada (I won't bother)
Toyota recommends "Toyota Super Long Life Coolant", which has been tested to ensure that it will not cause corrosion nor result in malfunction of your engine coolant system with proper usage. "Toyota Super Long Life Coolant" is formulated with long-life hybrid organic acid technology and has been specifically designed to avoid engine cooling system malfunction on Toyota vehicles.
Please contact your Toyota dealer for further details.
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And from Toyota:
http://www.toyota.com/owners/parts-s...chemicals.html
Normal Green Coolant vs. Long and Super Long Life Coolants:
With the advanced metallurgy in todays engines and engine systems. What used to suffice 20-30 years a ago as green coolant that contained silicates, amines, nitrites, and borates etc.. would react with the materials in the new engines and cooling systems (particularly seals) and cause leaks. It doesn't happen instantly but over time the the coolant system would develop leaks. I don't recommended that you mix or replace Pink with Red if it is avoidable and I extremely do not recommend mixing or replacing Pink or Red with/to Green for the reasons stated above.