EVEN WORSE: NOT RESOLVED: HELP: What blew up?!

[JunkCrzr89]

So I just got off of the phone with the shop and they “flushed” it using their machine before putting in the yellow.

I’m getting the shop to flush the coolant system and put in Toyota red. In your experience are the vacuum flushing machines sufficient at completely flushing the system? It seems I’m going to have to have distilled water run through the system which he said they don’t do.

From my limited experience with those machines, they basically just exchange fluid. In other words, pull out the yellow while putting in the red. It really needs around 10-20 gal of distilled run through it to get all the yellow out.

 

[geargarcon]

This is what I found as the ingredients in the Red and Pink coolants. Doesn’t this make the red abs IAT and not an OAT?

What Are the Ingredients of Each Coolant? ​

Toyota Pink Super Long Life Coolant:

• Water (7732-18-5)
• Ethylene Glycol (107-21-1)
• Diethylene Glycol (111-46-6)
• Sebacic Acid (111-20-6)
• Potassium Hydroxide (1310-58-3)

Toyota Red Long Life Coolant:

• Ethylene Glycol (107-21-1)
• Diethylene Glycol (111-46-6)
• Water (7732-18-5)
• Orangic Acid Salt (532-32-1)
• Hydrated Inorganic Salt (1310-58-3)

I found this same ingredient list multiple places but here is my source: Toyota Red vs Pink Coolant - Which is Better? - Garage Dreams - https://garagedreams.net/products/toyota-red-vs-pink-coolant-which-is-better

 

[geargarcon]

And sorry to have bogarted this thread, I just didn’t want to create another if a similar discussion was already happening somewhere.

 

[JunkCrzr89]

Doesn’t this make the red abs IAT and not an OAT?

No. IAT contains silicates. OAT does not contain silicates (silicates = SiO4; hydrates = SO4, K, etc + H2O) as shown by your ingredients list. Toyota (and most other Asian car manufacturers) state that silicates can damage and reduce the operating lifetime of their water pumps and gaskets/seals.

Organic Acid Salt (532-32-1) = Sodium benzoate
Hydrated Inorganic Salt (1310-58-3) = Potassium hydroxide

 

[AlpineAccess]

At the end of the day, its summer. If you're not somewhere where its going to freeze, I'd pull the block drains and dump the radiator and put a few cheap gallons of distilled water in it and drive it for awhile to get a good rinse. Then I'd swap in any Toyota approved product that does not contain silicates.

But that being said - I've worked on 2UZ's with 300k+ that when drained had green domestic and orange mopar coolant in it. I think the key is sticking with the color that is in there, or flushing WELL before making the switch. Would they have been running better having always ran silicate free coolant? Maybe!

 

[geargarcon]

No. IAT contains silicates. OAT does not contain silicates, as shown by your ingredients list. Toyota (and most other Asian car manufacturers) state that silicates can damage and reduce the operating lifetime of their water pumps and gaskets/seals.

Ok so both HOAT and IAT contain silicates?

 

[JunkCrzr89]

Ok so both HOAT and IAT contain silicates?

Correct

 

[geargarcon]

Got everything sorted today. Flushed multiple times with distilled water. Toyota red put back in. Thanks for all of the input.