Antifreeze PEAK or OEM Toyota

Find the peak brand equivalent. That's what I use for 2021 RH Model. Make sure specifications match. Properly flush your coolant system before implementing and properly bleed and burp the air out before taking it for a ride. Do not leave air in coolant passages. I've had no issues with different brand coolant and oil.

I bought a 19 SEL brand new and have been using the Peak exclusively. I’ve had no issues.

I used the PEAK pink stuff for Asian vehicles in my 2004 and 2006. Good stuff.

Using an AMAM coolant (typically yellow - “All Makes, All Models”) is the safest thing you can do. It has none of the nitrites, borates, silicates, etc. that can cause issues in various systems. It’s really one coolant that works everywhere. Peak 10X is a solid choice in that realm.

Head to an autozone and get PEAK blue coolant for european vehicles.

My last vehicle was an RX350 which I had for 14 years with 115,000 miles before trading it in and had zero leaks. I flushed/replaced the coolant at 100,000.

Proton original radiator is of very poor quality. Rust prone. Change it as soon and use premixed Toyota Coolant bought from Toyota Service Center to avoid fakes. Toyota SLLC and an aftermarket radiator will last the remaining lifetime of your Saga.

I bought peak global lifetime 50/50 pre diluted antifreeze & coolant. The ingredient list matches the HD one. I believe that is what they use it is just colored differently. I checked with my dealer and they said it is perfectly fine to use.

I've used the PEAK Asian pink coolant in my Camry in a pinch, but OEM is worth it. (For my 2013 prius and 2014 camry, they use the pink colored fluid)

I don’t use peak anything. it’s actually not great coolant.