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Description
75w90 gl 4 gear oil Red Line 50304 Mt-90 75w-90 Gl-4 Manual Transmission and Transaxle Lubricant (MTL)The Redline MT90 is recommended for Evo 7 8 9 and 1G 2G DSM manual transmission for street use and some racing. Sold as a 1 quart bottle or 1 gallon. Please adjust quantity as needed. Fluids ship to the lower 48 United States only. Packaging: 1 Quart Bottle 1 Gallon (4 Quarts) For Evo 7 8 9 and DSM Manual Transmission: Recommended for street use and some racing. Use 3 bottles for the transmission fluid change or buy the gallon. More Info: Since most
The Redline MT90 is recommended for Evo 7/8/9 and 1G/2G DSM manual transmission for street use and some racing. Sold as a 1 quart bottle or 1 gallon. Please adjust quantity as needed. Fluids ship to the lower 48 United States only.Packaging:
1 Quart Bottle
1 Gallon (4 Quarts)
For Evo 7/8/9 and DSM Manual Transmission:
Recommended for street use and some racing.
Use 3 bottles for the transmission fluid change or buy the gallon.
More Info:
Since most GL-5 gear oils for differentials are too slippery for manual transmissions, Red Line offers these products that ensure proper shifting while providing ultimate wear protection.
Red Line MT-90 High-Performance Gear Oil is a full-synthetic ester-based lubricant designed for use in manual transmissions and front-wheel-drive transaxles. This shear-stable formula resists breakdown for extended periods and offers more consistent viscosity in warm and cold temperatures for less gear noise and improved shifting. This fluid is less slippery for improved synchronizer coefficient of friction and offers stronger film strength for better wear protection.
- 75W90 GL-4 gear oil (similar to SAE 5W40/10W40 engine oil viscosity)
- Popular in Nissan, Mazda, Mitsubishi, VW/Audi, Lotus Elise/Exige, Toyota, Mendeola transmissions and Atlas transfer cases for Off Road
- Offers quicker shifts, perfect synchronizer coefficient of friction
- Safe for brass synchros, as it lacks the reactive sulfurs found in most GL-5 oils that cause damage
- High performance gear protection and longer synchro life
- Eliminates notchy shifting, even when cold
- Satisfies the gear oil viscosity requirements of 75W90, 80W90, 90 and motor oil viscosities of SAE 40, 10W40 and 15W40
- Recommended for GL-1, GL-3 and GL-4 applications, as well as where most special synchromesh fluids are specified
- Appropriate coefficient of friction for most manual transmission synchronizers (other's synthetic gear oils are often too slippery for proper synchro engagement)
- Red Line offers lubricants to pinpoint nearly every transmission application
- MT-LV, MTL, MT-85 & MT-90 are not for use in differentials with hypoid gears
- Excellent gear and synchro protection, balanced slipperiness for easier shifting in cold climates
- Excellent for high- and low-mile transmissions
- Compatible with petroleums and other synthetics
Suitable Replacement For:
API GL-4/GL-3/GL-1SAE 75W90 SAE 90/80W90
SAE 40/10W40/15W40
OEM Compatibility:
Alfa RomeoAudi G 052 911
BMW 81 22 9 407 305
Castrol BOT 130M
Castrol BOT 328
Castrol SAF AG4
Castrol SHC 630
Castrol TAF-X 75w-90
Castrol Syntrans Transaxle 75W-90
Ford F32Z-19C547-MA
Ford M2C175-A
Ford M2C200-B
Ford WSS-M2C203-A1
Ford XT-4-QGL
GM 12345371
GM 12345724
GM 12345871
GM 12346074
GM 89021806
GM 89021807
GM-Daewoo EDS-M-8049
Holden
Hyundai/Kia 08950-00010-A
Hyundai/Kia 04300-5L1A0
Jeep 0489722AA
Lotus
Mazda (MES) 115A
Mazda 0000-77-114-QT
Mazda L.L. Manual Gear Oil IS
MB A 001989510310
Mitsubishi
Nissan Mission Oil MP-G HQ
Opel
Skoda
Toyota 08885-80917
Toyota 08885-81023
Toyota 08885-81026
Vauxhall
VW/Audi G 005 000
VW/Audi G 005 100
VW/Audi G 045 190 A2
VW/Audi G 052 145
VW/Audi G 052 157
VW/Audi G 052 911
VW/Audi G51
VW/Audi G50
VW/Audi 501.5
Typical Properties:
| API Service Class | GL-4 |
| SAE Viscosity Grade (Gear Oil) | 75W90 |
| Vis @ 100°C, CSt | 15.5 |
| Vis @ 40°C, CSt | 86 |
| Viscosity Index | 194 |
| Pour Point, °C | -45 |
| Pour Point, °F | -49 |
| Brookfield Viscosity @ -40°C, Poise | 320 |
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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4.2 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Favorite bones for my dog
Size: Small, Color: Pink
Dog favorite bones, but broken fast pink bone. I buy multiple times.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2026
★★★★★ 5
Great for a teething puppy
Size: Small, Color: Pink
This is one of the best training collars we have used. So good that we ordered a second one so each dog has one and we have recommended it to several other people. It has 3 options, beeping, vibration and shock. Each option has several different settings. The collar comes in many different colors. It is very sturdy and it is waterproof. It is adjustable and the clip is very sturdy. I had previously bought a different training collar that did not phase my dog in the slightest and was a complete waste of money. It always seemed to be low on battery even after charging, this one however lasts like a week after charging. I will continue to use this brand for sure
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Reviewed in the United States on June 8, 2026
★★★★★ 5
The Toy Annie Always Comes Back To
Size: X-Small, Color: Pink
⭐⭐⭐⭐⭐
These have become one of Annie's all-time favorite toys.
Annie is a tiny 4-pound dog, and she can be surprisingly picky about toys. She has a basket full of options, but she consistently comes back to her nubby Nylabones.
I think the size and texture are a big part of why she likes them so much. They're easy for her to carry around, chew on, and play with by herself. Whenever I buy a new one, it quickly becomes part of her regular toy rotation.
As a small-dog owner, I appreciate finding toys that are appropriately sized and actually get used instead of being ignored after a few days.
If you have a tiny dog who loves to chew, these are definitely worth trying. They've been a favorite in our house for a long time.
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Reviewed in the United States on May 30, 2026
★★★★★ 4
Dogs love these!
Size: Small, Color: Pink
My miniature Goldendoodle puppies love these! The only drawback is after several weeks of chewing, the bones develop pretty sharp edges long before the actual bone has been worn down. At that point, they are dangerous for the dog’s gums and must be thrown away.
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Reviewed in the United States on June 3, 2026
★★★★★ 5
🦴 Micro Bone, Major Relief; Perfect Puppy Teething Chew Toy
Size: X-Small, Color: Blue, Size: X-Small, Color: Blue
🐾 Hi, I’m PVD; teething survivor, nub enthusiast, and gum massage advocate.
This tiny blue bone was my day-one favorite from 8 weeks to 5.5 months, it handled every chew session, tantrum, and tooth eruption with dignity. I’ve officially “aged out,” but I still salute it.
⭐ Why it earned 5 stars:
✔️ Perfect XS size for toy breed jaws
✔️ Soft on sore gums, durable enough for dramatic chewing
✔️ Ridges + nubs = mouth spa treatment
✔️ Chilling it = elite teething relief
✔️ Kept me busy and prevented chewing on illegal things (furniture, shoes… mother)
🌀 Why I’m now gracefully retiring it (but still recommending):
✘ Jaw strength and confidence grew but I didn’t vibe with the larger size versions (tried and rejected them with judgment)
✘ Texture now too gentle for my post-teething chew style
✘ Advanced chewers may get bored once the rage-chewing era passes
✘ I get gum relief via Nylabone Nubz edible chews now
Best For:
• XS-Small breed puppies, especially under 5 lbs
• Teething stages + gum relief
• Delicate chewers or fur babies still in the love-bite phase
• First-time puppy parents (trust me, this bone prevents household drama!)
• 8 weeks–6 months old
🚫 Not for adult teeth or advanced chew techniques.
📝 Final Re-Barks:
Iconic starter bone for toy breed pups. Affordable, safe, and genuinely soothing during teething chaos. It carried me through the hardest months (and saved several legs; both human and furniture). I’ve outgrown it; but I’ll forever endorse it for the next generation of tiny chewers.
— PVD (Tiny Tooth Graduate, Former Chew Therapy Success Story 🧊🦴)
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Reviewed in the United States on September 17, 2025