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  1. Powertrain for 2010-2013
    2010 Mazda 3S 6 Speed with 170K miles on it. Great vehicle. Started a mild grind into 3rd gear from either 2nd or 4th gear awhile back. Almost definitely the sychronizer has stopped synchronizing. I've basically stopped using 3rd gear, which is kind of inconvenient probably not great for the...
  2. Powertrain for 2010-2013
    Hi everyone, I have a 2010 Mazda 3 2.0L 5-speed, which I think is the G35M-R transmission (can anyone confirm?). 300 000km, which is something like 188k miles. I'm losing my 2nd gear synchro. TL;DR If I want to take a shot at fixing this myself at home, what tools do I need, what else should...
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