MT90 75W90 GL-4 Full Synthetic Gear Oil by Red Line, Since most GL-5 gear oils for differentials are too slippery for manual transmissions, Red Line
![Redline MT-90 75W90 GL-4 Gear Oil, 1 Gallon](https://www.maperformance.com/cdn/shop/products/red-line-oil-red-50305-gallon-11958761783366.jpg?v=1628939931)
Redline MT90 75W90 GL-4 Synthetic Gear Oil (50304)
HIGH PERFORMANCE - Gear protection and longer synchro life. Recommended for GL-1, GL-3, and GL-4 applications, as well as where most special
![Redline MT-90 75W90 GL-4 Gear Oil, 1 Gallon](https://m.media-amazon.com/images/I/61EiM6QqAbL._AC_UF894,1000_QL80_.jpg)
Red Line 50305 Manual Transmission (MT) 90W Gear Oil - 1 Gallon, (Pack of 4)
**Recommended for GL-1, GL-3, and GL-4 applications** This 75W90 GL-4 gear oil (similar to 5W40/10W40 engine oil viscosity) is popular in Nissan,
75W90 MT-90 GL-4 Gear Oil (1 Quart) - Red Line 50304
NS means non-slip, for transaxles that need hypoid-protection and smooth shifting
![Redline MT-90 75W90 GL-4 Gear Oil, 1 Gallon](https://www.redlineoil.com/content/images/thumbs/0000208_75w90ns-gl-5-gear-oil_464.jpeg)
75W90NS GL-5 Gear Oil
How-To: 6-Speed Manual Transmission Oil Change
![Redline MT-90 75W90 GL-4 Gear Oil, 1 Gallon](https://i.ebayimg.com/images/g/nDcAAOSwDGFfkRHI/s-l1200.jpg)
Many Viscosity Redline Gear Oil 75W-85 75w-90 75w-140 80w-140 GL-4/5
![Redline MT-90 75W90 GL-4 Gear Oil, 1 Gallon](https://i.ebayimg.com/images/g/PbUAAOSwgSJkJkJ3/s-l225.jpg)
Red+Line+57905+75w90+Gl-5+Gear+Oil+1+Gallon for sale online
![Redline MT-90 75W90 GL-4 Gear Oil, 1 Gallon](https://m.media-amazon.com/images/I/51goD+4fPgL._AC_UF894,1000_QL80_.jpg)
Red Line 58404 Lightweight Shockproof Gear Oil - 1 Quart Bottle : Automotive
![Redline MT-90 75W90 GL-4 Gear Oil, 1 Gallon](https://www.kartek.com/mm5/graphics/00000001/redline-oil-5-gallon-pail_150x112.jpg)
Red Line Racing Oils 75W90 MT-90 GL-4 Full Synthetic Transmission Gear Oil 1 Gallon Bottle - Kartek Off-Road
![Redline MT-90 75W90 GL-4 Gear Oil, 1 Gallon](https://i.ebayimg.com/thumbs/images/g/LuUAAOSwZVlXwJ2v/s-l640.jpg)
GL-4 GL Rating Vehicle Gear and Differential Oil 75W - 90 Oil Viscosity for sale