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Engineer in the Process
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18 Posts
Discussion Starter #1
My 2009 Mazda 3s is coming up on 30k miles and I was just wondering what would be the best option for replacing the auto transmission fluid? Being that I drive in manual mode 99.5% of the time and the liquid that I've been testing from the dipstick is light/moderate brown, should I just drain, drop the pan, clean it, and replace the fluid or should I go and use the cooler hose too? Tips/advice is also welcomed too!
 
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