Red Line MTL 75W80 GL-4 Manual Transmission Fluid - 1 Quart

SKU: RED-50204

In Stock


  • Appropriate coefficient of friction for most manual transmission synchronizers (other 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 gear)
  • 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
  • Popular for BMW, Honda and Acura, Ford Focus, late-model Mini Cooper, Dodge & Jeep NV1500, NV3500 and NV5600 truck transmissions
  • Popular replacement for and improvement over GM Synchromesh® (#12345349) and Auto-Trak II® (#12378508), also Ford Motorcraft® XT-MT-QS
  • 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 70W, 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

Ratings & Reviews

2 Reviews

  • 4 stars
  • 0 reviews
  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews


10/08/2014 9:55:00

not great

Not that great of a product. Better off with Amsoil


05/08/2022 23:59

Redline MTL- Great Gear Oil

Redline manufactures the finest gear oil and transmission fluid available. Don't let Amsoil dealers tell you otherwise. This product, MTL, is designed for manual transmissions with brass synchros (GL-4 Spec.) If your manual transmission calls for the use of ATF, this will be a suitable replacement which offers better performance and protection than automatic fluid. Regarding the 1 Star review found here: Amsoil devotees are truly sad people brainwashed into promoting their product through deceptive reviews of competing products. It's negative manipulative abuse that comes along with all MLM/Pyramid Scheme investments. For more information on the cultlike, financially ruinous world of MLM schemes like Amsoil, watch documentaries like "LuLaRich," "Betting on Zero," or "Money Explained."