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  1. Smooth shifts: Amsoil MTF vs. Redline 70w80 vs. Motorcraft XT-M5-QS?

    2014-2018 Mazda 3 Skyactiv Engine and Performance
    On my Acura I ran GM syncromesh FM. Very smooth shifting. Looking for similar shift feel on the m3. Not going to track the car, just spirited DD. I don't abuse my syncros, double clutch, and live in a temperate climate. What MT oil does everyone recommend on the m3 for smooth shifting...
  2. MTF gesr oil question

    2010-13 Mazdaspeed 3 Engine and Performance
    MTF gear oil question I found in my handbook that our MS3 takes 75w80 gl4 oil Can I use 75w90? Is the brand Red line a good brand? Also what diameter clear hose do I use to refill the car? Thanks in advance. Oh Ya I live in Canada so does the number the end mean that the 90 is thicker in...
  3. Skyactiv MTF Choices and Reviews...

    2012-2013 Mazda 3 Skyactiv Engine and Performance
    I know MTF isn't specific to the skyactiv vehicles but since the transmission is, I thought it might be nice to have a thread of compatible MTFs and people's thoughts on what they have used in their skyactiv MTXs. The OM specifies a 75W-80, GL-4 MTF. The GL-4 is what specifies the additive...
  4. Warning for Skyactiv 6spd MTX owners (MTF)...

    2010-2013 Mazda 3 Engine and Performance
    If you change your MTF, be warned, the manual calls for 1.74 quarts. It actually takes almost 3 quarts. Don't get caught with your pants down and only 2 quarts like I did. UGH.
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