Originally Posted by
Gerbur
Are you sure the cooler is not running transmission through the lower section of the radiator. I have a Mazda 5 that has a similar cooler on the transmission and it pumps transmission fluid, not engine coolant, through the bottom section of the radiator. I found a video for the Mazda 5 where you remove the one hose that pumps the transmission fluid Into the radiator and then you add a hose to the cooler outlet and run it into a bucket to measure how much fluid you are pumping out. You alternate running the car for 15 seconds, turning it off, then adding more new transmission fluid through the dipstick opening. I completely replaced my transmission fluid on my Mazda that way. My bucket had quart markings on it, so I knew how much fluid I was pumping out to know how many quarts to put back in. Once I got slightly past the rated fluid capacity of the transmission, the fluid coming out of the cooler turned from a brownish color to the red color of new coolant, so I knew that I had replaced all of the old fluid with new at that point. The process was easy. Btw, the service manual for the Mirage refers to that cooler at the transmission as a “transmission fluid cooler“, NOT as a “transmission cooler” or a “transmission coolant cooler”. Can anyone re -confirm that it is actually engine coolant running through that cooler and not transmission fluid?
It is engine coolant, not transmission fluid. And welcome to the forum.
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View my fuel log 2015 Mirage ES 1.2 automatic: 40.5 mpg (US) ... 17.2 km/L ... 5.8 L/100 km ... 48.6 mpg (Imp)