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⚙️ Shift into the fast lane of flawless performance!
Red Line 50304 MT-90 is a premium 75W-90 GL-4 manual transmission lubricant designed to enhance gear protection and extend synchro life. Its unique friction formula ensures quicker, smoother shifts even in cold conditions, while being safe for brass synchros by excluding damaging reactive sulfurs. Packaged in a convenient 4-quart set, it’s the trusted choice since 1979 for professional-grade transmission care.
| ASIN | B000QFN326 |
| Best Sellers Rank | #44,587 in Automotive ( See Top 100 in Automotive ) #77 in Gear Oils |
| Brand | Red Line |
| Brand Name | Red Line |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 62 Reviews |
| Included Components | (1063017) MT-90 75W90 GL-4 - QUART |
| Item Form | Oil |
| Item Type Name | ENGINE OIL |
| Item Weight | 2 Pounds |
| Liquid Volume | 128 Fluid Ounces |
| Manufacturer | Red Line |
| Material | Oil |
| Model Number | 50304 |
| Number of Items | 4 |
| Package Information | Bottle |
| Part Number | 50304 |
| Recommended Uses For Product | Automotive |
| Specific Uses For Product | Prevent Corrosion |
| Unit Count | 128.0 Fluid Ounces |
| Viscosity | 75W-90 |
| Warranty Description | LIMITED WARRANTY |
G**G
Worked as advertised
Tried another fluid prior to this which resulted in hard shifts. This is a perfect fluid for Jeep with AX15 transmission. Far better shifting even in cold weather
W**E
Very good
Works good.
C**.
Oil change 2915 Smart Car Trans
EXACTLY EHST OEM 2015 SMART CAR REQUIRES FOR TRANSMISSION OIL CHANGE. Works as it should. Highly Recommended. My transmission shifts much better. It took 3 quarts.
R**D
Gear oil
As advertised. Transmission shifts much smother. Good product.
K**T
Great stuff!
Meets the spec for my 98 Wrangler 5-speed gearbox.
H**Y
Good for old Jeep Tj
Works ok hard to find gl4 fluid for my old Jeep tj it just doesn’t shift as smoothly as it did I would buy it again
C**R
A lot better so far.
The first time changing my transmission fluid in my AX-5 for my jeep TJ. The nozzle on the bottle is not a standard size according to the Slippery Pete fluid pump (28mm was too big but still works just fine). After doing the first bottle there was a thick residue at the bottom. I might be oblivious and didn't see a shake well sign but you probably want to shake it to make use you get everything into the transmission.
S**Y
Quality of product
This changed the was how my gearbox shifts on a 26 year old Toyota Prado.
Trustpilot
2 weeks ago
1 day ago