Manual Transmission Oils

Red Line Transmission Lubricants are designed to provide excellent low-temperature shiftability and improved gear protection at higher temperatures. Efficiency improvements between 1-5% are typical. The synthetic base stocks used have tremendous thermal stability and provide the best film strength available. 

The unique combination of base stocks and additives allow Red Line transmission oils to carry higher loads compared to petroleum lubricants. The stability of these products allow them to be used for extended periods. MTL® can be used in most manual transmissions and transaxles for both street and racing use unless the manufacturer requires the additional protection of an SAE 90 or the extreme-pressure protection of a GL-5. In those situations the MT 90 (GL-4) or 75W90NS (GL-5) will provide good shiftability and synchro compatibility and extra gear protection. 

Limited-slip transaxles may require the 75W90 Gear Oil to prevent limited-slip chatter. 75W140NS is designed to help reduce the noise in noisy transmissions and transaxles, while still allowing good low-temperature shiftability. 

D4 ATF and High-Temp ATF provides the gear protection of a GL-4 gear oil in an automatic transmission fluid, which is far superior to a conventional ATF. This gear protection makes it perfect for lubricating automatic transaxles and high-performance automatic transmissions. The D4 ATF provides the best low temperature shiftability. MTL® provides better wear protection in most manual transmissions which call for an ATF which can be very important in racing applications. MTL® provides the low temperature properties equivalent to a petroleum ATF. All Red Line transmission lubricants provide excellent synchronizer compatibility.

All of the Manual Transmission Products Feature:

• 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

• 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

• Excellent for high- and low-mile transmissions

• Compatible with petroleums and other synthetics

MT90 75W90 (GL-4)

• 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
• Satisifies 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

MT85 75W85 (GL-4)

• Recommended for Nissan 350Z and 370Z (also most Maxima,
  Altima & Sentra), Mitsubishi Evolution, Hyundai, and KIA applications
• Many NV4500 truck transmission applications like Chevy Silverado
  and Dodge Ram, for Chrysler spec MS-9070
• Safe for brass synchros, as it lacks the reactive sulfurs found in most
  GL-5 oils that cause damage
• Offers quicker shifts, perfect synchronizer coefficient of friction
• Eliminates notchy shifting, even when cold
• High performance gear protection and longer synchro life
• Recommended for GL-1, GL-3 and GL-4 applications as well as where 
  most special synchromesh fluids are specified
• Satisifies the gear oil viscosity requirements of 75W, 80W, 85W
  and motor oil viscosities of SAE 30 and 5W30

MTL 75W80 (GL-4)

• Popular for BMW, Honda and Acura, Ford Focus, late-model Mini Cooper, 
  Land Rover/Range Rover LT77S, Dodge & Jeep NV1500, NV3500 , 
  NV3550 and NV5600 truck transmissions
• Popular replacement for and improvement over GM Synchromesh® (#12345349)
  and Auto-Trak II® (#12378508) and Chrysler spec MS-9224
• Safe for brass synchros, as it lacks the reactive sulfurs found in most 
  GL-5 oils that cause damage
• Offers quicker shifts, perfect synchronizer coefficient of friction
• Eliminates notchy shifting, even when cold
• High performance gear protection and longer synchro life
• Satisifies the gear oil viscosity requirements of 75W, 80W, 
  and motor oil viscosities of SAE 30, 10W30, and 5W30
• Recommended for GL-1, GL-3, and GL-4 applications as well as where 
  most special synchromesh fluids are specified

D4 ATF

• Our most versatile ATF, use where Dexron III®, Dexron II®, Mercon®
  and Mercon V® fluids are recommended, provides a GL-4 level
  of gear protection
• Popular applications: Toyota Type T-III and T-IV, Honda ATF-Z1, NissanMatic D, J & K, Diamond SP-II, SP-III, Mazda ATF M-V, 
  most BMW, Audi, VW automatic transmissions
• Also used with manual transmissions and transaxles like T-5, T-45, 
  T-56 and late-model BMW
• Excellent cold weather operation

D6 ATF

• Our lowest viscosity, most shear-stable ATF for consistent operation
• Designed to satisfy Dexron-VI®, Dexron-III®, Mercon®SP, Mercon®LV, 
  Honda DW-1, Toyota WS, Mercedes Benz NAG-2, ZF-LG 6, 6+ and 8 fluids
• Also satisfies API 70W/75W/80W and GL-4 gear oil requirements