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As you can see, straight from the jug, the Mazda coolant is resisting both corrosion and freezing better than the Motomaster.
I only use honda coolant. My 2003 crv has almost 300k on the original water pump.
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.
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
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.
Use the OEM honda stuff. It's really nice.
I'm running Honda type 2 coolant in my 94 sonoma. Flushing helped but it seems getting a good P-HOAT coolant stopped or at least paused the rusting while offering better protection.
You're not supposed to add tap water... distilled water is fine for emergencies, but always top up with coolant whenever possible
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.
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We compare antifreeze across these categories:
In March 2026 on PartReview, antifreeze OEM Honda were overall better than OEM Mazda.
In March 2026 on PartReview, antifreeze OEM Honda were overall more popular than OEM Mazda.
By vote balance, antifreeze OEM Honda surpassed OEM Mazda:
By number of reviews, antifreeze OEM Honda surpassed OEM Mazda:
In March 2026, according to PartReview, antifreeze OEM Mazda and OEM Honda have not taken top places in car-specific ratings. You can help by adding your review about these manufacturers.
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