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Description
Red Line MT-90 Transmission Gear Oil 50304Red 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-90
Use: Manual Transmissions
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
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]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 1273 reviews
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Product Reviews
★★★★★ 5
Great sleep
Color: White, Size: Queen (Pack of 2), Color: White, Size: Queen (Pack of 2)
Finally found a pillow that is comfortable. Tested about 5 until I found the right one. This is perfect for back and side sleepers. Firm, but soft. Just enough filling and great quality. Will hold up for many years.
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Reviewed in the United States on May 24, 2026
★★★★★ 4
Good overall
Color: White, Size: Standard (Pack of 2)
Bought these for our guest bedroom. They are quite overstuffed, so if you like full pillows this will be your thing. As such they are dense and firm. The height is a bit much if you are small framed, but are comfortable overall and stay cool enough to be nice in the summer.
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Finally Found Pillows Everyone Loves
Color: White, Size: King (Pack of 4)
I LOVE these pillows. I bought the king-size set and ended up liking them so much that I want them on every bed in the house.
They’re soft but still supportive, and they actually work for different sleeping positions, back, side, and stomach sleepers. They don’t go flat, but they’re also not overly stiff, which is such a hard balance to find. I throw them in the washing machine which makes them super easy to wash! The size is true to King!
They feel cool and hotel-quality, and the down-alternative fill is great if you don’t want real feathers. I wake up without neck pain, and they keep their shape night after night.
If you’re picky about pillows (like I am), these are absolutely worth it. Comfortable, affordable, and a great value for a set of four.
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Reviewed in the United States on February 4, 2026
★★★★★ 5
Feel perfect, not too soft and not too hard.
Color: White, Size: Queen (Pack of 4)
Incredibly perfect pillows. They feel not firm nor too soft but just right.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Comfortable
Color: White, Size: Queen (Pack of 2)
Omg! I love this pillow. I have a hard time finding pillows comfortable, this is the best pillow I’ve purchased. Definitely worth it!
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Reviewed in the United States on June 1, 2026