Red Line MTL® 75W80 GL-4 Synthetic Gear Oil

(Exc. 8% Sales Tax - GA only)
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Red Line Oils

Red Line MTL GL-4 synthetic gear oil, a 75W80 grade oil whose viscosity is a low 75W at very low temperatures, rising to a high 80W, and nearly an 85W, at elevated temperatures. This ensures it provides adequate viscosity to prevent wear and deaden gear noise.

Overall, this gear oil offers excellent protection of gears and synchronizers, and its balanced slipperiness provides a perfect coefficient of friction, allowing easier shifting. Safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage.

Red Line MTL Offers quicker shifts, with the perfect synchronizer coefficient of friction and eliminates notchy shifting, even from cold, with high performance gear protection and longer synchro life. MTL is recommended for use in manual transmissions and transaxles, but not for use in differentials with hypoid gears.

Popular for BMW, Honda/Acura, Ford Focus, late-model Mini Cooper, Land Rover/Range Rover LT77S, Mitsubishi, Dodge and Jeep NV1500, NV3500, NV3550 and NV5600 truck transmissions. Also very popular as a replacement/improvement over GM Synchromesh® (#12345349), Auto-Trak II® (#12378508) and Chrysler spec MS-9224 oils.

Supplied in 1 quart (0.946ml) bottles

Red Line MTL is recommended for GL-1, GL-3 and GL-4 applications as well as where most special synchromesh fluids are specified.


  • Reduces friction and runs cooler
  • Suitable for high or low mile transmissions
  • Quicker smoother gear shifting from cold
  • Protects both gears and synchronizers
  • P65 Warning
     "WARNING: This product contains a chemical known to the State of California to cause cancer and/or birth defects or other reproductive harm.