NEO Synthetics 75W90RHD Racing Gear Oil (Gallon, 3.785L)

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  • Regular price $260.00+GST

NEO Synthetics 75W90 RHD Gear Oil. Racing Heavy Duty.

NEO Synthetic Gear Lubricant is race-proven – not only at Indy but at endurance competitions all over the world. The fact is no conventional gear lube can perform as well as NEO’s Synthetic. Racing teams have been using this same oil since the 90s. Neo 75W90RHD is factory-fill in Xtrac Transmissions and is used exclusively with many top manufacturers.

NEO 75W90RHD synthetic gear oil is designed to take 80% more load-carrying capabilities than its competitors. NEO 75W90RHD is compounded with the most recently developed additive system to provide the ultimate in gear protection, from an E.P. wear, corrosive wear, and shock load wear standpoint.

A friction modifier is also employed to reduce sliding friction resulting in lower energy requirements, thus less drag, lower fuel consumption, and more horsepower. It will provide superior all-around performance in virtually all applications calling for gear oil rated from GL-2 through GL-6, in any viscosity grade from 75w, 80w90, or 90w. This can result in reduced gear oil inventories allowing a single lubricant to replace as many as 4 or 5 separate oils.


  • 75W90 RHD Gear Oil Synthetic Base Racing Heavy Duty
  • Sold As Gallon (3.785 Litres)
  • Specific gravity: 0.87
  • Flash, degree C: 246 (475 degrees F)
  • Viscosity at 100 degrees C cST (SUS): 15.6
  • Brookfield vis., -40 degree C: 48.500
  • Pour Point:-45
  • Viscosity Index: 180
  • 7-Day Moisture Corrosion (L-33): PASS
  • API GL-5 Test Sequence: PASS
  • Mil-L-2105 C Test Sequence: PASS

NEO 75w90 RHD gear oil is recommended for automotive type gear service in manual transmissions (yellow metal safe), differentials, transfer cases, over-drive units, oil lubricated wheel bearing, oil lubricated universal joints, steering gearboxes, or any other gear unit calling for a high quality heavy duty 75w90 hypoid type gear oil. Many people use 75W140 gear oils where 75W90 is specified. 75W90RHD is perfect for this situation, it will offer better protection than traditional 75W90 gear oils.

NEO 75w90 RHD also is recommended for use in all limited slip type differential designs. NEO 75w90RHD meets or exceeds performance requirements of Military Specification Mil-L-2105B, Mil-L2105-C, and API Specification GL-5, GL-6, and SAE Classification J306a.

This is what Xtrac says about NEO Synthetics 75W90RHD Gear Oil:
This SAE 75W-90 synthetic oil is compounded with the most recently developed additive system to provide excellent gear life and improved lubrication particularly from a shock load standpoint.

A friction modifier is used to reduce sliding friction, and it has been tested in a multitude of applications and has proven to improve gear life, lower the gearbox temperature and improve efficiency.

As well as its low temperature viscosity benefits, it has excellent high temperature stability. It can be used throughout Xtrac’s range of gearboxes and differentials including limited slip differentials, active differentials and hypoid axles.

EP additives ensure that this oil is suitable for use in gearboxes and differentials where the sliding properties of hypoid gears put extreme demands on the lubricant."