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Item #:
220461727
Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack)
Item #:
220461727
BZD 80
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Order now and get it around Friday, August 21
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Manual transmission gear lube 75W90 GL-4 offers quicker shifts, improved gear protection, and better coefficient of friction
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What Stands Out
Superior Performance
Red Line's MT-90 offers excellent lubrication for manual transmissions, ensuring smooth shifting and reduced wear, outperforming standard oils in temperature stability and friction reduction.
Enhanced Protection
Designed to meet GL-4 specifications, this lubricant provides outstanding protection against gear wear and corrosion, extending the lifespan of your vehicle's transmission components.
Convenient Packaging
Available in a 1-gallon container, Red Line MT-90 is easy to use, making it ideal for both professional and DIY mechanics, ensuring efficient application and reducing waste.
Product Details
| Brand Name | Red Line |
| Recommended Uses For Product | Gear Oil |
| Specific Uses For Product | Manual transmissions and transaxles, GL-1, GL-3, and GL-4 applications |
| Item Form | Oil |
| Manufacturer | Red Line |
| Unit Count | 64 Fluid Ounces |
| UPC | 737534816592 |
| Number of Items | 2 |
| Model Number | 50304 |
| Part Number | 50304 |
| Container Type | Bottle |
| Viscosity | 75W90 |
| SAE J300 Viscosity Grade | 75W-90 |
| Liquid Volume | 64 fluid ounces |
| Item Weight | 2 pounds (910 grams) |
| Material | Oil |
| Brand | Red Line |
| Package Information | Bottle |
| Package Weight | 5.0 Pound (2.27 kg) |
Who Should Buy?
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Manual Transmission Users
Ideal for drivers who operate manual transmissions looking for enhanced shifting performance and reduced wear.
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Performance Vehicle Owners
Great for enthusiasts needing high-performance lubrication to withstand extreme conditions and high-stress driving.
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Classic Car Maintainers
Suited for owners of classic vehicles requiring GL-4 rated oils for optimal function and vintage lubrication standards.
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Automatic Transmissions
Not suitable for vehicles with automatic transmissions as it is designed specifically for manual systems.
Product Description
Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant (MTL) - 1 Quart (2 Pack)
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the primary use of Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant?
Answer: The Red Line 50304 MT-90 is specifically formulated for manual transmissions and transaxles that require GL-4 lubricants. This product provides exceptional protection against wear, helps maintain smooth shifting, and enhances performance in high-demand conditions. It’s ideal for vehicles that experience extreme temperatures and heavy loads, ensuring your transmission operates optimally under various driving conditions. -
Question:
Is Red Line 50304 MT-90 compatible with all manual transmissions?
Answer: While the Red Line 50304 MT-90 lubricant is designed for GL-4 specifications, it is not universally compatible with all manual transmissions. It's crucial to consult your vehicle's owner manual or a trusted mechanic to confirm suitability. This lubricant is ideal for vintage cars, racing applications, and those that require enhanced performance under stress, making it a versatile choice for enthusiasts. -
Question:
How often should I change the transmission fluid when using Red Line MT-90?
Answer: The frequency of changing your transmission fluid using Red Line MT-90 depends on the specific vehicle and usage. Generally, it is recommended to change the fluid every 30,000 to 60,000 miles, but performance enthusiasts or vehicles subjected to severe driving conditions may benefit from more frequent changes. Regular fluid checks can help catch any issues early, maintaining the health of your transmission. -
Question:
Can I use Red Line 50304 MT-90 in my high-performance vehicle?
Answer: Yes, the Red Line 50304 MT-90 is an excellent choice for high-performance vehicles. The lubricant is engineered to withstand extreme conditions, making it suitable for competitive racing and other high-stress applications. It minimizes friction and enhances shifting performance, which can provide an edge in both daily driving and competitive environments. -
Question:
What are the benefits of using synthetic oil like Red Line MT-90?
Answer: Using a synthetic oil like Red Line MT-90 offers numerous benefits over conventional oils. Synthetic oils provide superior lubrication, resist degradation at high temperatures, and contain additives that further enhance protection against wear. This results in improved lifespan and performance of your transmission, making it especially beneficial for vehicles that demand high reliability under challenging driving conditions. -
Question:
How does Red Line 50304 MT-90 enhance shifting performance?
Answer: Red Line 50304 MT-90 enhances shifting performance by minimizing friction and providing smooth lubrication throughout the transmission components. Its advanced formula reduces gear drag and allows for easier engagement of gears, leading to better overall drivability. This results in a more responsive and enjoyable driving experience, particularly noticeable in high-performance or precision applications. -
Question:
Is Red Line 50304 MT-90 suitable for all climates?
Answer: Yes, Red Line 50304 MT-90 is designed to perform effectively across a wide range of temperatures and climates. Its synthetic formulation retains viscosity under high heat while still providing fluidity in colder conditions, making it a versatile choice for varied environments. This adaptability ensures that your transmission remains protected and responsive no matter the weather conditions. -
Question:
What should I do if my transmission fluid appears cloudy or has particles?
Answer: If your transmission fluid appears cloudy or contains particles, it's advisable to change the fluid immediately. Cloudy fluid indicates contamination or degradation, which can lead to transmission damage if not addressed. Switching to Red Line 50304 MT-90 can provide a clean and effective solution, enhancing the overall health and functionality of your transmission after the fluid replacement. -
Question:
Where can I buy Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant in Belize?
Answer: You can purchase Red Line 50304 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant from Ubuy. They often provide a wide selection of automotive products, ensuring you can find exactly what you need for your vehicle. Shopping from Ubuy can give you access to various options to suit your preferences and needs.
Red Line Gear Oils 50304 Editorial Review
The Red Line 50305 MT-90 75W-90 GL-4 Manual Transmission and Transaxle Lubricant has garnered a positive reputation among users looking to enhance their vehicle’s manual transmission performance. Many customers have noted a significant improvement in shifting smoothness after switching to this product, particularly in vehicles that previously struggled with gear engagement. For instance, one user reported that after using the MT-90 in a 2002 Chevy Tracker, the transfer case was able to shift into low range for the first time since ownership, indicating substantial restoration of functionality. Several reviews highlighted the lubricant's capacity to effectively manage temperature variations and maintain smooth shifting across multiple gear ranges, even in colder conditions. Users of various vehicles, from Honda Accords to modified Cobalt SS turbo and Jeep Wranglers, echoed similar sentiments, noting that the MT-90 prevented grinding during shifts and enhanced overall transmission precision. The fact that the fluid doesn’t have a strong, unpleasant odor was also mentioned positively by some users. While the lubricant is priced on the higher end, many feel that the performance benefits justify the cost, especially Considering the difficulty in finding other GL4-rated lubricants. Overall, the impression is clear: Red Line MT-90 is highly regarded for anyone seeking a reliable, performance-enhancing transmission fluid. **
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Pros
- Significantly smooths shifting performance
- Restores functionality to previously problematic transmissions
- Maintains smooth operation across various temperatures
- Effective in preventing grinding during gear shifts
- Lighter odor compared to other lubricants
- Generally well-regarded for a variety of vehicles
Cons
- Higher price point compared to other options on the market
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Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
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BZD 80
Order now and get it around Friday, August 21
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Features & Benefits
- High performance recommended for GL-1, GL-3, and GL-4 applications
- Offers excellent gear and synchro protection for easier shifting
- Safe for brass synchros and lacks reactive sulfurs found in most GL-5 oils
- Popular gear oil for Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota and more
- Established in 1979, Red Line Products outperform and protect better than any on the market
- Works with high and low mileage vehicles, guaranteed to work best in all conditions
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