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Description
Castrol Transynd 668 - 55 Gallon DrumDescription Castrol TranSynd 668 is a premium, full synthetic automatic transmission fluid specifically formulated for Allison Transmission heavy duty, on highway automatic transmissions. TranSynd 668 provides oxidative stability, anti wear performance, and friction durability. TES 668 specification differentiators include extended anti shudder durability and extended clutch friction durability. This fluid features an Allison TES 668 approval. The TES
Description
Castrol® TranSynd 668® is a premium, full-synthetic automatic transmission fluid specifically formulated for Allison Transmission® heavy-duty, on-highway automatic transmissions. TranSynd 668 provides oxidative stability, anti-wear performance, and friction durability. TES 668 specification differentiators include extended anti-shudder durability and extended clutch-friction durability. This fluid features an Allison TES 668 approval. The TES 668 specification is fully backwards compatible with both TES 295® and TES 468 applications.
Features & Benefits
- Delivers improved gear protection.
- Delivers extended anti-shudder durability.
- Delivers extended clutch-friction durability.
- Excellent corrosion and foaming resistance.
- Excellent thermal and oxidative stability that helps to prevent deposits and oil thickening.
- Excellent transmission cleanliness under all conditions permits extended oil-drain intervals and decreased servicing.
- Excellent temperature reduction through reduced friction leads to longer oil and component life.
- Outstanding cold-flow properties enables faster oil flow to all critical components particularly during cold starts.
- Optimized frictional characteristics gives smoother gear changing at all ambient temperatures and load conditions.
- Excellent shear stability properties help to retain full transmission performance over entire oil-drain interval.
Applications
Specifically formulated and approved for any automatic transmission specifying for Allison Transmission TES-668 or TES-295.
Specifications
| Name | Method | Units | TranSynd 668 |
|---|---|---|---|
| Appearance | Visual | - | Bright & Clear |
| Color | Visual | - | Red |
| Density @ 15C, Relative | ASTM D4052 | g/ml | 0.8508 |
| Viscosity, Kinematic 100C | ASTM D445 | mm²/s | 6.9 |
| Viscosity, Kinematic 40C | ASTM D445 | mm²/s | 33 |
| Viscosity Index | DIN ISO 2909 | None | 168 |
| Viscosity, Brookfield @ -40C (75W) | ASTM D2983 | mPa.s (cP) | <12,000 |
| Flash Point, COC | ASTM D92 | °C | >210 |
| Pour Point | ASTM D5950 | °C | -51 |
Additional shipping fees will apply to residential, limited access, deliveries outside the regular delivery network or locations requiring a lift gate to complete delivery.
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
4.6 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Would buy again!!!
Color: Dark Grey, Size: 7 Seat
⭐️⭐️⭐️⭐️⭐️ Perfect Couch for Comfort, Space, and Style!
I couldn’t be happier with my purchase of the SUAWY 108 Inch Sectional Sleeper. From the moment it arrived, I knew I made the right choice. Setup was straightforward, and the couch feels incredibly sturdy and well-built. The fabric is soft to the touch yet durable enough to handle everyday use, which is perfect for both lounging and having guests over.
The size is exactly what I was looking for — spacious enough to seat a large group comfortably without feeling cramped. Whether I’m relaxing after work, having friends over, or stretching out for a nap, it provides more than enough room. The chaise and sleeper function are real game changers. The pull-out sleeper is surprisingly supportive and comfortable — not at all like the thin, saggy mattresses I’ve experienced with other sofa beds. My guests have all commented on how well they slept!
I also love the storage space built into the sectional. It’s so convenient for keeping extra blankets, pillows, or even board games tucked away neatly. This design makes it feel like the couch was made with real-life use in mind, not just looks.
Speaking of looks, the style is modern and clean, and it blends perfectly into my living room. The neutral tone makes it easy to decorate around, and it honestly makes the whole room look more put-together.
Overall, this sectional sleeper has completely exceeded my expectations. It’s comfortable, practical, stylish, and worth every penny. If you’re on the fence, don’t hesitate — this is absolutely one of the best furniture investments I’ve made. I’m genuinely so happy every time I sit down on it, and I highly recommend it to anyone looking for a large, versatile sectional.
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Reviewed in the United States on September 8, 2025
★★★★★ 4
An okay sectional
Color: Dark Grey, Size: 5 Seat, Color: Dark Grey, Size: 5 Seat
I want to give my honest review of this couch. One significant difference in the actual couch vs the photos here is the back of the couch is actually much thinner than in the photos. It’s made with metal framing that is very thin covered in fabric with no sort of padding. Also, the back of the couch does not angle back far. Which makes the couch pretty uncomfortable, as your back is up at almost a 90 degree angle.
The quality of the couch overall is good. It was easy to assemble and I didn’t really run into any issues in that regard.
Like others have said. The cushions are quite thin and also not super soft. The couch is also quite low to the ground, so if you’re looking for that oversized super soft couch, this probably isn’t the one.
I do love the pull out bed/chaise which is super nice, ans the storage is great too. For the cost of the couch I think the quality and comfort are good.
I don’t love it, I don’t hate it.
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Reviewed in the United States on March 8, 2026
★★★★★ 4
Versatile and easy to use
Color: Dark Grey, Size: 7 Seat, Color: Dark Grey, Size: 7 Seat
This couch was great for the price! Came in about 5 boxes with instructions in each box and the necessary parts for each piece in the corresponding box. It took my husband an afternoon to put it all together and he said it was very easy.
The back cushions attach by velcro which is great in some ways but in others not so much. Our cat likes to lay on the back of the couch and that has caused the cusion to indent and pull away from the velcro. We've only had the couch a week and that cushion is already not wanting to reform.
The pull out bed is very easy to use even with my back issues.
The storage is fantastic.
Every cushion comes off for easy washing.
Cushions are firm and comfy.
All in all 100% worth the money so far.
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Reviewed in the United States on February 8, 2026
★★★★★ 5
Favorite Couch Ever! 💗
Color: Dark Grey, Size: 7 Seat, Color: Dark Grey, Size: 7 Seat
This couch far exceeded my expectations. It was on sale for $750 when I purchased it which is a steal! The cushions are EXTREMELY soft and comfortable. Its appearance is very modern and saves up so much space! The height is perfect and it easily folds back to make it not like a day bed. Personally we leave it like this especially with a baby because it gives us a lot of room to stretch out and again SUPER COMFORTABLE. The fabric is phenomenal and very easy to clean! 10/10 definitely recommend! Would purchase again! The storage area is perfect for pillows and blankets as the ottoman can hold things as well as the chase WHICH can be accessed while the couch is in “day bed mode” as I say. Nothing but good things to report!
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Nice couch for the price
Color: Black, Size: 7 Seat, Color: Black, Size: 7 Seat
Nice and firm I was able to put it up by myself in about three hours. It is really cute The material is soft. I really like it. It was super easy to put together. It came in 4 different boxes, I was worried because people said they got the boxes on different days luckily, I got the whole couch the same day and put together that night. I’m happy with this purchase. Can’t wait to sit on it and watch TV. I just wanna give it a few days to let the seat cushions recover.
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Reviewed in the United States on May 24, 2026
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