Gear 300 75w90 - 100% Synthetic Ester (1 Liter)

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Motul 3178CZ
  • GEAR 300 75W-90
  • Racing gearbox and differential lubricant
  • 100% Synthetic -- Ester based
Additional Information:


Specially designed for racing vehicle gearboxes : speed way, rallye, race

All mechanical transmission, synchronised or not synchronised gearboxes, gearbox/differential, transfer gearboxes and hypoïd differentials without limited slip system operating under shocks, heavy loads and low revolution speed or moderate loads and high revolution speed.


  • STANDARDS API GL4 and GL5 / MIL-L-2105D

  • 100% synthetic extreme pressure lubricant for an efficient anti wear protection, a better resistance at

  • high temperature and a longer life time.

  • 0% shear loss : Unshearable oil film in extreme conditions.

  • Stays in 90 grade after KRL 20 hours shear test as requested by SAE J306 Standard, July 1998 update

  • Very high lubricating power which decreases friction and wear.

  • 90 grade at hot temperature to provide outstanding oil film resistance at hot temperature and/or to

  • reduce transmission noise.

  • Fluid at low temperature to allow easier gear shifting when the gearbox is cold.

  • Less effort required on the gear lever to shift the gears.

  • Suitable for any type of seal and yellow material used in gearboxes design.

  • Anti-corrosion, Anti-foam.


Oil change: According to manufacturers' requirements and adjust according to your own use.


  • Viscosity grade SAE J306 75W-90

  • Density at 15°C (59°F) ASTM D1298 0.900

  • Viscosity at 40°C (104°F) ASTM D445 72.6 mm²/s

  • Viscosity at 100°C (212°F) ASTM D445 15.2 mm²/s

  • Viscosity index VIE ASTM D2270 222

  • Flash point ASTM D92 200°C / 392°F

  • Pour point ASTM D97 -60°C / -76°F

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