Red Line Oil MT-90 is a 75W90 GL-4 gear oil, blended with the highest quality group 5 ester base stocks. MT-90 offers superior gear and synchro protection, balanced friction for easier shifting and reduced drag on moving parts. Ideally suited to synchromesh transmissions, Red Line’s MT-90 offers one of the highest performances of any gear oil on the market making it extremely popular.
Red Line MT-90 Gear Oil features:
- 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