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.
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 Prestone 50/50 HOAT compatible in my 2012 JK and it works great. I like to do it every 3 yrs or so.
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.
Prestone Max Violet is ok to use--it meets G12++ or TL774G which is fine to use with the G12evo in your car already.
I always use Prestone concentrate and then dilute it down to a 40/60 coolant to water ratio.
Most likely answer is he used one similar to PRESTONE which they do have one thats for all makes and models, it is a universal coolant including European models.
I’ve done it with my fiesta that had a leaking thermal housing I think I ended up topping it up so much by the end it was almost all Prestone wouldn’t personally do it on a car I care about though
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If choosing antifreeze across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare antifreeze across these categories:
In March 2026 on PartReview, antifreeze Prestone were overall better than OEM Mazda.
In March 2026 on PartReview, antifreeze Prestone were overall more popular than OEM Mazda.
By vote balance, antifreeze Prestone surpassed OEM Mazda:
By number of reviews, antifreeze Prestone surpassed OEM Mazda:
In March 2026, according to PartReview, antifreeze Prestone led more car-specific ratings than OEM Mazda:
Prestone are chosen by owners of cars such as: Volkswagen Golf, Volkswagen Jetta, and others.
Antifreeze OEM Mazda have not yet taken leading positions in car-specific ratings. You can help by adding a review and specifying your car.
If this comparison didn’t fully answer your question, there are many others on PartReview.
For example, comparisons of antifreeze Prestone with: PEAK, Pentosin, VALVOLINE, OEM BMW, OEM Volkswagen, OEM Toyota, OEM Honda.
Also available: comparisons of antifreeze OEM Mazda with: PEAK, Pentosin, VALVOLINE, OEM BMW, OEM Volkswagen, OEM Toyota, OEM Honda.
You can also see who is better among other antifreeze manufacturers: PEAK or Prestone, Pentosin or Prestone, Prestone or VALVOLINE, Prestone or OEM BMW, Prestone or OEM Volkswagen.
