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โ๏ธ Shift into the future with Red Lineโs ultimate gear oil!
Red Line 50504 MT-85 75W85 GL-4 Gear Oil is a premium synthetic transmission fluid designed for manual gearboxes. It ensures quicker, smoother shifts and extends synchro life by protecting gears and brass synchros without corrosive sulfurs. Compatible with popular performance and everyday vehicles like Nissan 350Z, Mitsubishi Evolution, and more, this 4-quart pack offers professional-grade reliability trusted since 1979.






| ASIN | B00NQBFHVW |
| Best Sellers Rank | #135,172 in Automotive ( See Top 100 in Automotive ) #141 in Gear Oils |
| Brand | Red Line |
| Brand Name | Red Line |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 196 Reviews |
| Item Form | Oil |
| Item Weight | 8 pounds |
| Liquid Volume | 128 fluid ounces |
| Manufacturer | Red Line |
| Material | Synthetic |
| Model Number | 50504 |
| Number of Items | 4 |
| Number of Packs | 4 |
| Package Information | Bottle |
| Part Number | 50504 |
| Recommended Uses For Product | Vehicle,Truck |
| Specific Uses For Product | Compatible with Nissan 350Z and 370Z, Mitsubishi Evolution, Hyundai, Kia, Quaife synchro manual trans applications, NV4500 truck transmission applications like Chevy Silverado and Dodge Ram |
| UPC | 737534816486 672713967460 |
| Unit Count | 128 Fluid Ounces |
| Viscosity | 75W85 |
R**L
Completely restored shift quality
Awesome product. It fixed the transmission problems I was experiencing and completely restored the feel of the gears. It honestly feels brand new. Will definitely buy again.
K**N
Does the job
works great. meets my truck requirements
B**Y
Great product at a cheaper price.
Good quality oil required for my transmission but at a cheaper price.
R**E
Smooth Shifting
My transmission shifts very smooth now. Highly recommended. On a 2005 Nissan Frontier 6 speed manual transmission.
S**F
recommended oil
I use it on a 2005 Nissan 350Z manual transmission, works great
D**.
Good brand
Got it for a good price. Good brand
M**.
Great Fluid, But The Non-Standard Bottle Proved to be an issue for me.
Great Product. It's very difficult these day's to find an ester based straight GL-4 synthetic. None of my Local Auto Part's stores even carry a fluid with these specifications. This product Matches the specifications on my Nissan exactly. The notchy Shifting went away, the winning noise when cold went away. This fluid did exactly what i was hoping it would. However i am not willing to give it five stars for one main reason. The non-standard bottle. Since the fill plug on my Transmission is difficult to access, i had to purchase a transfer pump. Most of the hand pumps you find at Auto Parts stores are designed to screw on to the top of a standard gear oil bottle. None of them would work on the RedLine bottle. So i had to go to the hardware store and buy extra fittings and vinyl tubing in order to modify my Pump since i did not have a spare Gear oil bottle around to use. I used a one gallon washer fluid jug after cleaning it out to avoid contamination, and i was able to attach my pump to that with some Minor modification, I put all 4 quarts in that container and then into the Transmission in one go, So it did work out in the end, but this is extremely annoying. Why can't RedLine just use a Normal Bottle like everybody else?
C**G
Good deal
Good deal, fast shipping.
A**C
Best fluid for My 09 cobalt ss sedan
I choose redline mt-85 over the oem fluid for its price, performance and compatibility. Chevrolet Cobalt SS with F35 transmission.
A**M
All good
It's the oil i needed for my transfer case, good price, packed well
J**N
Quick, priced fairly. Great packaging for protection
Came within 2 days of purchased. Good protective packaging. Even the bottle were in ziploc bags in case of leakage. Great purchase.
Trustpilot
2 days ago
1 month ago