I wouldn’t do that. They have different stuff in them I used to work for Toyota we never mixed them. I’m not sure on the exact differences I can’t remember since it’s been awhile since I done the cooling system training but I do know they don’t recommend using them mixed or in a system which takes a different color.
The red is a IAT coolant a lot like the old green, while the pink is an OAT extended life coolant. I wouldn't mix unless the system was completely flushed.
The red is a IAT coolant a lot like the old green, while the pink is an OAT extended life coolant. I wouldn't mix unless the system was completely flushed.
I don't believe that is true re: red. I believe it is a HOAT and I'm looking for the TSB that says they can be mixed.
edit:TSB appears to be PG010-02
Also referenced casually here under service fluids
Super Long Life Antifreeze/CoolantThis special pink formula provides maximum protection without the use of harmful silicates. It's extremely durable and was developed specifically to meet the requirements of your Toyota's engine.
Compatibility with non-metallic materials helps it extend the life of water pump seals.
Won't corrode aluminum surfaces like coolants that contain borate.
Won't clog radiators due to silicone "gelling."
Pre-diluted 50/50.
Compatible with Toyota red Long Life Antifreeze/Coolant.
Find Toyota OEM parts, genuine Toyota accessories, and TrueStart™ Batteries online. The Toyota parts catalog includes quality parts you can trust because they’re made specifically for your vehicle.
Yota red is a very early HOAT like G05, benzoate as the organic inhibitor and phosphates as the secondary. Better options are avaliable and readily mix with it.