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Red Line MT-90 GL-4 Gear Oil Quart View larger

Red Line MT-90 GL-4 Gear Oil Quart

RED-50304

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For Manual TransmissionsRed Line MT-90 Gear Oil is safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage. Recommended for GL-1, GL-3, and GL-4 applications, as well as where most special synchromesh fluids are specified. 

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Red Line MT-90 GL-4 Gear Oil Quart 

Red Line® engine and transmission lubricants have long been the choice of racers and knowledgeable engine builders. 

For manual transmissions. Red Line MT-90 Gear Oil is safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage. Recommended for GL-1, GL-3, and GL-4 applications as well as where most special synchromesh fluids are specified. 

The thermal stability, film strength and reduced parasitic drag found in Red Line® engine oil all contribute to lower operating temperatures, increased engine life and more power. Red Lines’® racing heritage is reflected in all of their products...you’ll see more Red Line® products at the track than any other lubricant manufacturer for all of these reasons. 

About Red Line® Gear Oil for Manual Transmissions

 

  • 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
  • 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
  • 75W90 GL-4 gear oil (similar to SAE 5W40/10W40 engine oil viscosity)
  • Popular in Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota
  • Offers quicker shifts, 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 75W, 80W 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

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