Is it critical to change coolant at 100K?

[RMcG]

Is this Valvoline Zerex ZEREX DEX-COOL acceptable for a 2008 Yaris? Here is an Amazon link. ? Based on looking at the owner's manual, it looks like it is compatible.

I have also attached a screenshot that shows a check by compatibility with 2008 Toyota Yaris.

Here below is detailed information on the composition:

Valvoline ZEREX DEX-COOL antifreeze coolant is a patented* carboxylate formulation with a service life of up to five years or 150,000 miles. It incorporates state-of-the-art organic acid technology in an ethylene glycol base for protection of all cooling system metals including aluminum. ZEREX DEX-COOL antifreeze coolant is approved by General Motors to the GM 6277M specification. ZEREX DEX-COOL antifreeze coolant contains no phosphates, silicates, borates, nitrates, amines and nitrites. It can be mixed with any DEX-COOL and is approved by Opel, Dae Woo and Saab. It is dyed orange to distinguish its unique chemistry from traditional green and yellow silicate coolants. When diluted 50% with water, ZEREX DEX-COOL protects modern engine components from winter freezing and summer boiling. ZEREX DEX-COOL antifreeze coolant is storage stable for up to five years as both a concentrate or diluted with water. It contains a high quality defoamer and will not harm gaskets, hoses, plastics or original vehicle paint. Call 1-800- TEAM-VAL with questions. ZEREX DEX-COOL is formulated to meet or exceed the following antifreeze specifications and/or is recommended: ASTM D3306 SAE J1034, J814 SAE J1941 GM 6277M DEX-COOL APPROVED Siemens Wind Turbines Ford WSS-M97B44-D Saab, Opel Approved Scania, Volvo TMC of ATA RP-302B Federal Specification A-A-870A Navistar CEMS B-1 Type IIIA

[RMcG]

Originally Posted by RMcG

Here is an Amazon link. ? Based on looking at the owner's manual, it looks like it is compatible.

Here below is detailed information on the composition:

Valvoline ZEREX DEX-COOL antifreeze coolant is a patented* carboxylate formulation with a service life of up to five years or 150,000 miles. It incorporates state-of-the-art organic acid technology in an ethylene glycol base for protection of all cooling system metals including aluminum. ZEREX DEX-COOL antifreeze coolant is approved by General Motors to the GM 6277M specification. ZEREX DEX-COOL antifreeze coolant contains no phosphates, silicates, borates, nitrates, amines and nitrites.

The owner's manual says to use Toyota Super Long Life Coolant or a similar high-quality ethylene glycol-based, nonsilicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology.

It looks like this Zerex formulation meets the requirements, but I am interested in what others think. One of my doubts is that this Zerex formulation is orange and what I have in the car is pink.

Thanks,

R.