ATTENTION RED LINE OIL CUSTOMERS: Please be advised that we are not accepting walk-in customers at our Benicia office at this time due to COVID-19. You may place an order at redlineoil.com or call us at (707) 745-6100. All orders will be shipped to your requested address at our standard shipping rate. We apologize for the inconvenience and hope to open our doors again to you in the near future. Thank you for supporting Red Line Oil, we appreciate your business.

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MT-85 75W85 GL-4 Gear Oil

MT-85 75W85 GL-4 Gear Oil

Our intermediate viscosity for Korea's finest and a few others, too.

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MT-85 75W85 GL-4 Gear Oil
MT-85 75W85 GL-4 Gear Oil
MT-85 75W85 GL-4 Gear Oil

MT-85 75W85 GL-4 Gear Oil

  • Recommended for Nissan 350Z and 370Z (also most Maxima, Altima & Sentra), Mitsubishi Evolution, Hyundai, Kia and Quaife synchro manual trans 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, a 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
  • Satisfies the gear oil viscosity requirements of 85W, 75W85 and motor oil viscosities of SAE 30 and 5W30
$17.95
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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)
  • 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
  • Excellent for high- and low-mile transmissions
  • Compatible with petroleums and other synthetics

Data Sheet Downloads

Typical Properties

API Service Class GL 4
SAE Viscosity Grade (Gear Oil) 75W85
SAE Viscosity Grade (Motor Oil) 5W30
Vis @ 100°C, cSt 12
Vis @ 40°C, cSt 62
Viscosity Index 198
Pour Point, °C -48
Pour Point, °F -54
Brookfield Viscosity @ -40°C, Poise 160

Available Sizes

Quart 50504
Gallon 50505
5 Gallon* 50506
16 Gallon* 50507
55 Gallon* 50508

*Only available from our dealers

RED LINE MT-85 HIGH-PERFORMANCE GEAR OIL is a full-synthetic ester-based lubricant designed for use in manual transmissions and front-wheel-drive transaxles. This shear-stable formula resists breakdown for extended periods and offers more consistent viscosity in warm and cold temperatures for less gear noise and improved shifting. This fluid is less slippery for improved synchronizer coefficient of friction and offers stronger film strength for better wear protection.

Suitable replacement for:

API GL-4/GL-3/GL-1
SAE 75W85/85

Castrol BOT 0063
Castrol BOT 402
Castrol Syntorq LT
Chrysler/Dodge 04637579
Chrysler/Dodge 04874459
Chrysler/Dodge 04874464
Chrysler/Dodge 9.5550-MZ1
Chrysler/Dodge MS-9070
Chrysler/Dodge NV4500
Fiat/Alfa 9.5550-MZ1
Fuchs-Titan Pro SRG 75
GM 1940182
GM 10953477
GM 12346190
GM 88862472
GM 88862473
GM 93165290
GM 93740319
Hyundai/Kia 04300-00110
Hyundai/Kia 04300-00140
Hyundai/Kia 08950-00020-A
Hyundai/Kia 08950-00020-B
Kia  API GL-4 SAE 75W-85, fill for-life
MB 235.16
MB 235.4
MB 235.5
MB 001 989 14 03
MB MAN 341 Typ Z4
Mitsubishi 3717610
Mitsubishi DiaQueen Transmission Oil 
Mitsubishi DiaQueen Super Multi Gear Oil
Mitsubishi MZ313376
Nissan MTF HQ Multi 999MP-MTF00P
Nissan KE916-99931
Nissan KE916-99932R
Nissan KE916-99942R
Nissan KE916-99962
Nissan KLD26-75802
Nissan MT-XZ
Opel B 040 2071
Syntorq LT
Tremec® HP-MTF™ Manual Transmission Fluid
VW/Audi G 052 190
VW/Audi G 055 190

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