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⚙️ Shift like a pro, protect like a boss!
Red Line 50604 MT-LV is a full synthetic 70W/75W GL-4 gear oil designed for manual transmissions and transaxles. It delivers superior gear protection, smoother shifting even in cold conditions, and is safe for brass synchros by avoiding harmful reactive sulfurs. Trusted by top automotive brands and backed by rave reviews, it’s the go-to lubricant for enthusiasts demanding peak performance and longevity.






| ASIN | B07V1VW32J |
| Best Sellers Rank | #5,167 in Automotive ( See Top 100 in Automotive ) #10 in Gear Oils |
| Brand Name | Red Line |
| Container Type | Bottle |
| Customer Reviews | 4.8 4.8 out of 5 stars (460) |
| Included Components | Red Line 50604 Mt-Lv 70W/75W Gl-4 - Quart |
| Item Form | Oil |
| Liquid Volume | 32 Fluid Ounces |
| Manufacturer | Red Line |
| Material | Polyalphaolefin (PAO) |
| Model Number | 50604 |
| Number of Items | 1 |
| Part Number | 50604 |
| Recommended Uses For Product | Vehicle |
| Specific Uses For Product | Vehicle |
| UPC | 083522506045 |
| Unit Count | 32 Fluid Ounces |
G**Z
The Best MT Fluid
The best of the best. This Manual Transmission fluid that the service manual calls for on my 2013 Scion TC is the only one that meets or exceeds manufacturer specifications. I have used other brands and they always make it hard to shift after a cold start. With this fluid even in a cold start the transmission feels smooth as butter and makes it harder to miss-shift. I have been using this on my car for the past 5 years and have had no issues.
E**.
Like butter!
Quality product. My Toyota shifts so much smoother.
S**S
Great price good quality
Used on 2018 Toyota Tacoma great quality
D**Y
Hard to find, not cheap well worth it!
Red line is the only ones, that on their website, they state their product, this product, works properly for the Hyundai 7 speed DCT. I haven't had the time to try it yet. 2/8/26 I drained for about 1/2 hour the old Hyundai fluid out of the lower bolt then replaced it on the transmission and put in 2.1 quarts, just so a just a little seeped out, of the side check/fill hole my 2021 Kona Limited with 38,000 miles replaced. And it works superb now it shifts like it should, like my wifes 2020 Kona Ultimate 24,000 miles, smooth and firm. I am quite relieved and happy so far.
S**T
works as described
good product
A**Y
I filled it into my transfer case and the jerking is gone
I was looking for a high quality oil for a long time, not mass market. I filled it into my transfer case and the jerking is gone. Everything works great now.
W**9
Best price
Best price I could find on internet. As good as Toyota brand transfer case fluid, at much less price.
S**R
Great oil!
A perfect replacement in my 2022 Toyota Tacoma , no problems at all!
C**D
High quality lubricants. Used Redline Oil MT-LV as a replacement for my Hyundai Kona 1.6T AWD DCT. Shifts amazing, great company backing their products, and cost a fraction of ORM Hyundai DCT fluid.
R**G
Great quality product. I used on my 4Runner and Tacoma transfer cases, perfect substitute for oem stupid expensive fluid. 100k+ km with zero issues.
A**R
Came on time working great
J**0
Not cheap but well worth it, had transmission oil changed on my manual 2011 Corolla at my local Shop , they put in GL5 as recommended by Toyota dealership, after change vehicle was shifting rough into third especially when it was cold, got the shop to put this stuff in, shifts like a dream now, very smooth, shifts even better than before, definetly recommend this stuff.
D**D
Great product use it in a 2018 Toyota Corolla im 6 speed manual transmission. No grinding noise between shifts and very smooth.
Trustpilot
5 days ago
2 months ago