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Description
Red Line MT-85 Transmission Gear Oil 50504Red Line Transmission Lubricants are designed to provide excellent low temperature shiftability and improved gear protection at higher temperatures. Efficiency improvements between 1 to 5 Percent are typical. The synthetic base stocks used have tremendous thermal stability and provide the best film strength available. The unique combination of base stocks and additives allow Red Line transmission oils to carry higher loads compared to petroleum
Red Line Transmission Lubricants are designed to provide excellent low temperature shiftability and improved gear protection at higher temperatures. Efficiency improvements between 1 to 5 Percent are typical. The synthetic base stocks used have tremendous thermal stability and provide the best film strength available. The unique combination of base stocks and additives allow Red Line transmission oils to carry higher loads compared to petroleum lubricants. The stability of these products allow them to be used for extended periods. MTL® can be used in most manual transmissions and transaxles for both street and racing use unless the manufacturer requires the additional protection of an SAE 90 or the extreme pressure protection of a GL5. In those situations the MT 90 (GL4) or 75W90NS (GL5) will provide good shiftability and synchro compatibility and extra gear protection. Limited slip transaxles may require the 75W90 Gear Oil to prevent limited slip chatter. 75W140NS is designed to help reduce the noise in noisy transmissions and transaxles, while still allowing good low temperature shiftability. D4 Automatic Transmission Fluid and High Temperature Automatic Transmission Fluid provides the gear protection of a GL4 gear oil in an automatic transmission fluid, which is far superior to a conventional Automatic Transmission Fluid. This gear protection makes it perfect for lubricating automatic transaxles and high performance automatic transmissions. The D4 Automatic Transmission Fluid provides the best low temperature shiftability. MTL® provides better wear protection in most manual transmissions which call for an Automatic Transmission Fluid which can be very important in racing applications. MTL® provides the low temperature properties equivalent to a petroleum Automatic Transmission Fluid. All Red Line transmission lubricants provide excellent synchronizer compatibility.
Viscosity Grade: SAE 75W-85
Use: Manual Transmissions And Transaxle Lubricants
Type: Synthetic
API Rating: GL 4
Unit Size: 1 Quart
Unit Type: Bottle
Features
- Appropriate Coefficient Of Friction For Most Manual Transmission Synchronizers
- Red Line Offers Lubricants To Pinpoint Nearly Every Transmission Application
- Excellent Gear And Synchro Protection, Balanced Slipperiness For Easier Shifting In Cold Climates
- Excellent For High And Low Mile Transmissions
- Compatible With Petroleum's And Other Synthetics
- High Performance Gear Protection And Longer Synchro Life
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.7 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Almost tastes like chocolate milk!
Flavor Name: Chocolate, Size: 11.5 Fl Oz (Pack of 12)
I usually dislike protein drinks. But I need It, and this one actually almost tastes like chocolate milk. I’ve tried the other flavors of this brand, and for me, this is the least protein tasting one. Banana came close.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
The Gold Standard: Premier Protein Chocolate Shake
Flavor Name: Chocolate, Size: 11.5 Fl Oz (Pack of 12)
The Premier Protein Chocolate Shake is, in my opinion, the benchmark for ready-to-drink protein shakes. Whether you're a serious athlete, a busy professional, or someone trying to hit daily protein goals, this shake delivers on taste, convenience, and macros.
Taste & Texture (Surprisingly Good)
Let's be honest: most shelf-stable protein shakes taste like chalky chemicals. This is where Premier Protein shines. The Chocolate flavor is rich, creamy, and surprisingly satisfying without being overly sweet. It tastes like a genuine, albeit light, chocolate milk. Crucially, the texture is smooth and velvety; there is virtually no grittiness or unpleasant artificial aftertaste. I genuinely look forward to drinking these, which is half the battle with supplements. They are best enjoyed ice-cold!
Unbeatable Nutritional Profile
The macros are what make this shake truly exceptional:
30g of High-Quality Protein: Perfect for post-workout recovery, satisfying hunger between meals, or boosting the protein content of coffee/recipes.
1g Sugar & 5g Carbs: This low-carb, low-sugar profile makes it ideal for nearly any diet, including keto and low-glycemic plans.
160 Calories: A great way to add significant protein without excessive calories.
Verdict & Best Uses
I always keep a case of these shakes stocked. They are a true time-saver for fast breakfast additions, quick muscle fuel after the gym, or a guilt-free late-night snack. If you are struggling to find a convenient, affordable, and high-protein option that actually tastes good, look no further. This product is a staple.
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Reviewed in the United States on December 3, 2025
★★★★★ 5
An easy way to add protein to your diet
Flavor Name: Chocolate, Size: 11.5 Fl Oz (Pack of 12)
A nice way to add more protein to my diet. The taste in the texture are always the same. I like that it doesn’t change.
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Reviewed in the United States on May 7, 2026
★★★★★ 5
Perfect meal replacement protein shake
Flavor Name: Chocolate, Size: 11.5 Fl Oz (Pack of 12)
These shakes are super rich in chocolatey flavor. They are the perfect meal replacement or on the go protein. The quality is great and they are super refreshing. I recommend to drink them cold. They are way better.
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Reviewed in the United States on May 13, 2026
★★★★★ 4
Good protein option with good taste
Flavor Name: Chocolate, Size: 11.5 Fl Oz (Pack of 12)
These shakes are delicious. There are a few things about them I love. First, they are gluten-free. Next, they are low in sugar. They are also low in calories, and are very tasty. They do not leave an aftertaste like a lot of protein shakes. I do find you need to really shake them well to get a good consistency. They are not clumpy, but sometimes have strands that give them a weird texture. However, this does not happen if you shake them really well. I like to blend mine with fruit, and never have this problem when I do that. They are also really convenient because you can grab them and go. The serving size is perfect too. I would recommend these if you are looking for a low sugar, protein drink.
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Reviewed in the United States on February 26, 2026