Rating:
60 % of 100
$19.39
Part number
M10-26000
The favorite gear oil of Miata owners.
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You're reviewing:Redline MTL synthetic gear oil
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  1. I prefer MT-90 for my MSM 6 speed.
    Rating
    40%
    Perhaps it's unfair to give a poor rating to a product that's not even recommended by either manufacturer.
    Both Mazda & Red Line recommend 75W90 GL-4 for the Mazdaspeed MX-5, and I'll be staying with MT-90.
    My gearbox is much happier now that I've replaced the 'old' MTL with 'fresh' MT-90.
    My experience is the opposite to that of Flyin' Miata.

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    Posted on

  2. Not bad
    Rating
    80%
    I used this on my NB1 6-speed transmission for the past two years. My shifts felt ever-so-slightly better than whatever came out of the transmission, but nothing to write home about. This fluid will get the job done satisfactorily. I would trust this over whatever you can find in an auto parts store.

    Review by

    Posted on

  3. Works fine, but Red Line recommends, on their website, is MT-90 75W90 GL-4 gear oil.
    Rating
    100%
    Miata gear boxes were designed before synthetics were commonly used in gear boxes. Our boxes have large clearances, and Red Line currently recommends a heavier oil than this for our boxes. The oil that Red Line recommends, on their website, is MT-90 75W90 GL-4 gear oil. This said, many of us have used MTL for years, and have been fine with it.

    Review by

    Posted on

  4. Wouldn’t recommend it
    Rating
    40%
    The combination of this and the shockproof only lasted me 5 months. Now I gotta change the fluid because getting into gears is a little rough

    Review by

    Posted on

  5. Overrated
    Rating
    40%
    Tried this alone and in combination with Redline's Shockproof Gear Oil, and both resulted in better gearbox action than stock fluid (only slightly) but neither compare to Motorcraft Manual transmission fluid. Talking to other Miata owners and searching the forums, you'll find the Motorcraft fluid is actually the favorite of Miata owners and for good reason! It noticeably improved the shifting action of my 200,000+ mile transmission.

    Review by

    Posted on

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