








⚙️ Shift Like a Pro, Feel the Difference
Red Line 50305 MT-90 is a premium 75W90 GL-4 gear oil engineered for manual transmissions and transaxles. It delivers superior gear and synchronizer protection, ensures smooth shifting across all temperatures, eliminates gear noise, and supports high-speed downshifting. Trusted by enthusiasts for its performance gains and reliability.






| ASIN | B002INX20C |
| Best Sellers Rank | #90,855 in Automotive ( See Top 100 in Automotive ) #872 in Automotive Oils |
| Brand | Red Line |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,540) |
| Date First Available | 31 July 2015 |
| Item Weight | 2.27 Kilograms |
| Item model number | 50305 |
| Manufacturer | Red Line |
| Manufacturer Part Number | 50305 |
| OEM Part Number | 50305 |
| Product Dimensions | 19.05 x 10.16 x 28.58 cm; 2.27 kg |
| Viscosity | 75W90 GL-4 |
Z**.
Get what you pay for, though pricey, irrefutable 'performance' gains: vehicle shifts much much much more smoothly now - no more 'crunchy' shifts, & all gears operate better in a wider range of temps as well. Prior to the fluid change, 1st & Reverse were the more difficult gears to get in to, especially in colder weather - before the fluid had a chance to warm up - now they all shift smooth as butter. I can also shift much faster as a result. Last little + is that the fluid doesn't smell horrid.
M**.
Ottimo prodotto
R**S
Gear shifting in Audi 01E dropped from 0,5 to 0,3 seconds
M**0
Excellent fluid recommended by others.
S**A
I've been using this oil for a while now and it consistently performs well. My engine runs smoothly and quietly, and I’ve noticed improved fuel efficiency compared to some other brands I’ve tried. It's a trusted formula, and you can’t beat the value for the price.
Trustpilot
3 weeks ago
2 days ago