Antifreeze Pentosin or OEM Mazda

As you can see, straight from the jug, the Mazda coolant is resisting both corrosion and freezing better than the Motomaster.

I'd say to change out the coolant, and transmission fluid. DO NOT GET A TRANSMISSION FLUSH!!! Just get a place to change out the transmission filter, and top off the transmission fluid.

Pentosin Pentofrost

Yes I had low coolant in my brand new CX-30 and had to top it off 2-3 times with the FL22 fluid (factory OEM). I think some air is left in the system that gets out over time. Since then no issue with the coolant level

I had my AC condenser replaced and looked at it in the parking lot and confirmed it was full of coolant, drove home, and it was low. I ordered and added some OEM coolant at home. It's been fine ever since

I use the blue antifreeze (G11) that was specified for my 1987 16V. I am currently running 10W40 synthetic oil.

I use Pentofrost (Pentosin is the OEM supplier to Porsche). Our local NAPA carries it even.

This is normal. Mazda master tech. I work on these everyday. Every oil change they need to be topped off. The coolant evaporates from the bottle pretty quick.

Pentosin is one of my trusted brands. I would not hesitate to use 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.