Asian Blue Coolant

[macarose]

This is a bit timely. I'm planning on replacing the blue Asisan factory coolant on a 2009 Nissan Altima hybrid this week.

It comes with Asian blue coolant, but I do have plenty of Toyota pink coolant that apparently can be used as well. I plan on replacing both the engine coolant and the hybrid battery coolant.

I also have Ford 'Yellow' Coolant that can be used on 2019 and newer Fords along with a slew of other Ford related vehicles. It's a phosphate enriched coolant, but I'm a little bit concerned about mixing the red with the yellow since they have different certifications and I don't see one related to hybrids on the yellow coolant.

I don't think I can or should combine the two.

I do plan on buying another gallon of Toyota coolant instead. Even though the Ford coolant has molderizing in my garage, unopened, for nearly a year now.

Do you agree with this rationale?

 

[nthach]

All Asian cars use Phosphated coolant because of robustness of phosphate in forming film protecting aluminum and iron parts from corrosion.
It does not contain phosphate only if it says so.
Nissan Subaru Honda Suzuki use blue dye, Toyota use pink dye. In principle, any P-OAT coolant is suitable for Asian cars. It is only about color choice.

We should not use term HOAT because it may have phosphate or silicate. P-OAT and Si-OAT are better term.

Ford was having an issue with CAB-processed heater cores getting plugged up in the F-150 and Transit. Their fix was a complete flush of the cooling system(and replacing the heater core, paging @bdcardinal) and instead of using Dex-Cool(Motorcraft Orange), Prestone Cor-Guard was called for. It’s a pHOAT which eventually became Ford’s service fill and sold as Motorcraft yellow. The phosphate had an unexpected side effect Ford found out - it was quick to protect aluminum and the brazed joints in controlled atmosphere brazing. The Japanese use phosphate for quick passivation of aluminum.

 

[rondhol]

This is a bit timely. I'm planning on replacing the blue Asisan factory coolant on a 2009 Nissan Altima hybrid this week.

It comes with Asian blue coolant, but I do have plenty of Toyota pink coolant that apparently can be used as well. I plan on replacing both the engine coolant and the hybrid battery coolant.

I also have Ford 'Yellow' Coolant that can be used on 2019 and newer Fords along with a slew of other Ford related vehicles. It's a phosphate enriched coolant, but I'm a little bit concerned about mixing the red with the yellow since they have different certifications and I don't see one related to hybrids on the yellow coolant.

I don't think I can or should combine the two.

I do plan on buying another gallon of Toyota coolant instead. Even though the Ford coolant has molderizing in my garage, unopened, for nearly a year now.

Do you agree with this rationale?

In principle, many Asian Coolant compatible with Ford certifications. All P-OAT are compatible. The colour can be funky if we mix them. Pink and blue become purple, yellow and pink become orange, etc. I also plan to use blue coolant for the inverter in my Toyota hybrid. The one in the engine will be purplish since I cannot drain it 100%, unlike in the inverter.

https://it.wolflubes.com/en-us/prod...-ll-36c/50155-01#specifications-and-approvals

 

[bdcardinal]

Ford was having an issue with CAB-processed heater cores getting plugged up in the F-150 and Transit. Their fix was a complete flush of the cooling system(and replacing the heater core, paging @bdcardinal) and instead of using Dex-Cool(Motorcraft Orange), Prestone Cor-Guard was called for. It’s a pHOAT which eventually became Ford’s service fill and sold as Motorcraft yellow. The phosphate had an unexpected side effect Ford found out - it was quick to protect aluminum and the brazed joints in controlled atmosphere brazing. The Japanese use phosphate for quick passivation of aluminum.

Yes, the Ford yellow coolant (not to be confused with Gold) replaced the orange. What is also fun is it replaced the dark green coolant (not to be confused with the VC-5 green coolant) that is the same as Mazda FL-22.

 

[Trav]

Wait - my bad. Peak Blue is labeled as POAT (no H). Zerex Blue says it's HOAT with "phosphated organic acid additive technology", which sounds like PHOAT. Now I'm totally confused.

To make it even more confusing the Peak Asian green is exactly the same as the blue just a different dye. The freezing and boiling point is different because one is prediluted but in the spec sheets they are identical in every way.

https://asset.productmarketingcloud.com/api/assetstorage/2482_117972c4-c682-4955-8487-72db5b25bd65

https://asset.productmarketingcloud.com/api/assetstorage/2482_62c740cd-3323-44df-bb8e-5f71912ef802