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Review on ๐ŸŒฌ๏ธ The Ultimate Transmission Cooling Solution: Hayden Automotive 677 Rapid-Cool Plate and Fin Transmission Cooler by Kyle Miller

Revainrating 5 out of 5

Too small, only original cooler helps

Too small, too big, too cold, too warm. I've read that from buyers here and they're all wrong! How does anyone know the temperature of your hydraulic fluid? Do you have a thermometer installed? Or do you use an OBD2 scanner and your car can read it and show it to you on your smartphone or iPod touch? 107 degrees Celsius or 225 degrees Fahrenheit is the maximum temperature of hydraulic fluid before it begins to degrade. So anything shorter is BETTER to say the least lol. What about "working temperature"? My JDM AWD transmission requires an operating temperature of about 75 degrees Celsius, 167 degrees Fahrenheit, at any temperature below, and the gears will not shift. easy. So are you sure your HR temp is high enough to be concerned? Mine is 4WD and can travel 3,000 feet between work and home. at 100+ (115) degrees Fahrenheit. In summer I have 110 degrees Celsius, 230 Fahrenheit. I'm sure those towing trailers in Texas or Arizona will experience the same high temperatures. But what about the winter? With more cooling power, it means that the transmission fails, since the viscosity never drops. In other words, this coolant extracts some heat from the transmission oil, maybe 5%? But in winter that's not a problem. I recommend this cooler for SUV and some cars. but I think a bigger one, much bigger one, is needed for big trucks pulling big trailers. it's just logic. And change the fluid every 60,000 km. Unless you drive a Toyota. they fail too, but it's not that easy to change

Pros
  • Elegant design
Cons
  • Reliability