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Red Line MTL 75W80 GL-4 - 1 quart

Gear Oil

2895232 - 50204
  • The ONLY oil to use in your Spec Miata transmission! We've tried several, and MTL is the only one that will not cause missed shifts. We don't know why, but if you want to use the oil that works the best in your Miata, use MTL.
  • Popular for BMW, Honda and Acura, Ford Focus, late-model Mini Cooper, Land Rover/Range Rover LT77S, Dodge & Jeep NV1500, NV3500 , NV3550 and NV5600 truck transmissions
  • Popular replacement for and improvement over GM Synchromesh (#12345349) and Auto-Trak II (#12378508) and Chrysler spec MS-9224
  • Safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage
  • Offers quicker shifts, perfect synchronizer coefficient of friction
  • Eliminates notchy shifting, even when cold
  • High performance gear protection and longer synchro life
  • Satisfies the gear oil viscosity requirements of 75W, 80W, and motor oil viscosities of SAE 30, 10W30, and 5W30
  • Recommended for GL-1, GL-3, and GL-4 applications as well as where most special synchromesh fluids are specified
  • Not Available
    Pricing: $23.10
    5 5 3


  • Appropriate coefficient of friction for most manual transmission synchronizers (other's synthetic gear oils are often too slippery for proper synchro engagement)
  • Red Line offers lubricants to pinpoint nearly every transmission application
  • MTL, MT-85 & MT-90 are not for use in differentials with hypoid gears
  • Excellent gear and synchro protection, balanced slipperiness for easier shifting in cold climates
  • Excellent for high- and low-mile transmissions
  • Compatible with petroleums and other synthetics
  • Details

    Shipping Information

    • Item Requires Shipping
    • 2.0 lbs.
    • W9.0000” x H7.0000” x L4.0000”

    Customer Reviews

    Comment Total Reviews (3)

    Redline MTL
    • Currently 5/5 Stars

    Reviewed by:

    Product ownership: Less than 3 months

    Not purchased from: 5X Racing

    Used this the last two months and is seems to let the car accelerate a bit quicker and transmission shifts just fine!

    Effortless throws
    • Currently 5/5 Stars

    Reviewed by:

    Product ownership: Less than 1 month

    Purchased from: 5X Racing

    I purchased this when i decided to change out the shifter fluid and at first, it really didnt seem to make much difference, but after a couple of days, I could really tell a difference. The shift throws are effortless!

    Always Trusted Great Product!
    • Currently 5/5 Stars

    Reviewed by:

    Product ownership: Less than 1 year

    Purchased from: 5X Racing

    I've had previous experience with Red Line products in a Mitsubishi platform --- known for crappy transmission. Red Line provided significant enhancement when I used it.... so I decided to go back to it for my miata.

    Nothing wrong with the miata, I just wanted to replace stock (whatever was previously used) will be replaced by this product as I could trust to do well under stressful use as I track and auto-cross the car.

    5x Racing staff were great with their customer service, as I forgot to add something else when I ordered these... they were very helpful in ensuring I was taken care of.

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