Antifreeze PEAK or OEM Mazda

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.

You're not supposed to add tap water... distilled water is fine for emergencies, but always top up with coolant whenever possible

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 been using it for years and it works fine.

i use regular peak coolant (prediluted). it works fine.

I've used Peak OET Blue in both Hondas and a Toyota for years...last time I got it, was 17 a gallon

i use regular peak coolant, works fine

I run the Peak Final Charge Global red coolant. Less corrosive than the green stuff, and I haven’t had any issues running it.

My 2017 CX-9 and it has a coolant leak from the back of the block by the manifold and the shop I took it to said to take it to a dealer.