Red Line Oil Synthetic Manual Transmission Lubricant MT90 GL-4 75W-90 QUARTS 50304

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Red Line MT-90 75W90 GL-4 Gear Oil - PN: 50304

Purchase this if your needing Quarts of MT90 Part Number 50304.  If you have any questions about which fluid is used in your vehicle please ask before purchasing.  We generally keep 500+ bottles of RedLine Mt-90 instock at all times.  Purchase with comfort from the South Easts biggest Red Line Dealer!  Purchase by 5pm EST and have your order ship the same day Monday-Friday.  The more you purchase the more you save!
  • Popular in Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota, Mendeola transmissions and Atlas transfer cases for Off Road
  • Offers quicker shifts, Â perfect synchronizer coefficient of friction
  • Safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage
  • High performance gear protection and longer synchro life
  • Eliminates notchy shifting, even when cold
  • Satisfies the gear oil viscosity requirements of 75W90, 80W90, 90 and motor oil viscosities of SAE 40, 10W40 and 15W40
  • Recommended for GL-1, GL-3 and GL-4 applications, as well as where most special synchromesh fluids are specified
If you need a gallon please use the link below to our gallons of MT-90.

Since most GL-5 gear oils for differentials are too slippery for manual transmissions, Red Line offers these products that ensure proper shifting while providing ultimate wear protection
  • 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


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