Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.
🛠️ Keep your transmission shifting like new—because smooth rides never go out of style.
Castrol TranSynd 668 is a premium synthetic automatic transmission fluid engineered for universal fit and superior protection. It delivers exceptional thermal and oxidative stability, extended anti-shudder and clutch-friction durability, plus excellent corrosion and foaming resistance. Trusted by professionals and rated 4.8 stars by over 1,000 users, it ensures your transmission runs cooler, cleaner, and smoother for longer.
| ASIN | B095SZB2DK |
| Best Sellers Rank | #5,119 in Automotive ( See Top 100 in Automotive ) #20 in Transmission Fluids |
| Brand | Castrol |
| Brand Name | Castrol |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 1,070 Reviews |
| Item Form | Liquid |
| Liquid Volume | 1 gallons |
| Material | Synthetic |
| Number of Items | 1 |
| Number of Packs | 1 |
| Package Information | Bottle |
| Part Number | TES 668 |
| Recommended Uses For Product | Automotive |
| UPC | 079191219164 |
| Unit Count | 128 Fluid Ounces |
R**G
Great deal for oil
Just what I needed for my truck and will buy more to complete my transmission oil change!
M**5
Only fluid to use in any Allison transmission
Started using Tes fluids 8 years ago in my 2005 duramax. Trans developed a shudder and jerking motion going downhill in cruise control. Called Allison tech support. Was told Dex VI wasn't good enough to protect 1000 series trans internals and seals. Changed to Tes 295 and all trans symptoms disappeared. Did forward system flush to get all Dex VI out of the system. 4 gal. Now I'm using 668. 322,000 mi and the trans shifts like new. Can be used in NP and Magna 263 and 261 transfer cases . I do a pan drain every 2 years and canister filter every 12 mo. The cleaner the fluid the cooler it runs.
R**1
Good price, fast delivery
As expected, we'll packaged.
J**N
Great for the Allison
Great fluid. Chevy shifting so much better now.
T**A
Husband approved
Husband likes it. Good buy
P**E
Good stuff !
Top shelf & recommended transmission fluid for Allison 1000 transmissions. Never use anything else and Amazon has the best deal.
C**E
👍👍👍👍👍
Great stuff!
A**Y
As title says
E**T
Fully synthetic only way to go
I’m giving it 5 stars because it’s fully synthetic, I’m only expecting the best, the trailer will be the test
B**Y
Fast and good service
Everything was fine as described
K**W
It's the best for Alison transmissions
My chevy is 7 years young now and I swap out the external filter yearly and change out the oil every 2 years. Never ever had a problem using this oil. And I only use Alison filters BTW
K**R
Allison transmission filter & fluid.
Excellent product, good delivery.
M**L
Arrived on time and as ordered. why after purchasing items that they are offered at a lower price?
Arrived on time and as ordered. why after purchasing items that they are offered at a lower price?
Trustpilot
3 days ago
2 weeks ago