Red Line OIl

Red Line Synthetic Gear Oil for Transmissions

  • Sale
  • Regular price $23.10

Product SKU: RED 50604

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)
  • GL-4 gear oil is safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage
  • Offers quicker shifts, A perfect synchronizer coefficient of friction
  • Eliminates notchy shifting, even when cold
  • High performance gear protection and longer synchro life
  • Red Line offers lubricants to pinpoint nearly every transmission application
  • MT-LV, 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
  • Compatible with petroleums and other synthetics
  • Recommended for GL-1, GL-3 and GL-4 applications as well as where most special synchromesh fluids are specified

Oil Viscosity

  • MT-LV 70W/75W GL-4 - Popular in Toyota/Lexus LF 75W, BMW X-Drive and other transfer cases transfer cases calling for Shell TF0870
  • MTL 75W80 GL-4 - We invented the performance manual trans gear oil market with MTL.
  • MT-85 75W85 GL-4 - Our intermediate viscosity for Korea's finest and a few others, too.
  • MT-90 75W90 GL-4 - The most popular, the most viscosity, the most applications.
  • 75W90NS GL-5 - NS means non-slip, for transaxles that need hypoid-protection and smooth shifting
  • 75W140NS GL-5 - Big protection but not slippery, for certain trans and diff applications.
NOTE: 75W90NS and 75W140NS contains extreme pressure additives like Redline's 75W90 and 75W140 GL-5 oils, but lacks friction modifiers to balance slipperiness.