There is two Toyota coolants available, "red" long life concentrate (I'll call it "red") and pink super long life (I'll call it pink).
I think red coolant was factory-filled in Toyotas since '87-'88'. My dad bought a brand new '88 Toyota pick up with the 22RE that had red coolant. As an aside, it also had a downflow brass radiator that eventually leaked at the top header seem and I replaced the radiator. I also replaced the red with American green after that. No other coolant problemns were seen.
I think the Toyota red was an HOAT and probably one of the first. I think it was phosphated and contained an organic acid, sodium benzoate and/or sodium sebacate.
I'm not sure when Toyota started using the pink. But it's only avaliable in premix, and maybe that's why it looks pink because it's diluted and not because it's really dyed much differently to distinguish it. Anyway the dye color doesn't mean the formula is different. I think pink is also a HOAT and probably the same formula as red, phosphate and the OAT sodium benzoate.
Pink does claim a longer life for the factory-fill, ~10years/100k miles but after changing ~5 years/60K miles. And red I think had the claim of 5year/60K miles. So both we're extended life coolant vs. green.
Most of the Japanese OE coolants are the same with few exceptions, and are thought to be supplied by the Japanese anti-freeze manufacture CCI. Also they don't make it readily available to the aftermarket. So Honda type 2, Toyota red and pink, etc are probably all very similar and compatible with most all Japanese vehicles and also non-Japanse vehicles.
So bottomline is I think Toyota red is really just the concentrated version of the pink. If you can find red at a dealer for a good price, it might be a very good coolant to use in a lot of different applications.
I think red coolant was factory-filled in Toyotas since '87-'88'. My dad bought a brand new '88 Toyota pick up with the 22RE that had red coolant. As an aside, it also had a downflow brass radiator that eventually leaked at the top header seem and I replaced the radiator. I also replaced the red with American green after that. No other coolant problemns were seen.
I think the Toyota red was an HOAT and probably one of the first. I think it was phosphated and contained an organic acid, sodium benzoate and/or sodium sebacate.
I'm not sure when Toyota started using the pink. But it's only avaliable in premix, and maybe that's why it looks pink because it's diluted and not because it's really dyed much differently to distinguish it. Anyway the dye color doesn't mean the formula is different. I think pink is also a HOAT and probably the same formula as red, phosphate and the OAT sodium benzoate.
Pink does claim a longer life for the factory-fill, ~10years/100k miles but after changing ~5 years/60K miles. And red I think had the claim of 5year/60K miles. So both we're extended life coolant vs. green.
Most of the Japanese OE coolants are the same with few exceptions, and are thought to be supplied by the Japanese anti-freeze manufacture CCI. Also they don't make it readily available to the aftermarket. So Honda type 2, Toyota red and pink, etc are probably all very similar and compatible with most all Japanese vehicles and also non-Japanse vehicles.
So bottomline is I think Toyota red is really just the concentrated version of the pink. If you can find red at a dealer for a good price, it might be a very good coolant to use in a lot of different applications.