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⚙️ Keep your transmission running smoother, longer—because your ride deserves the best.
Castrol TranSynd 668 is a premium full-synthetic automatic transmission fluid designed exclusively for ALLISON transmissions. It offers industry-leading extended drain intervals up to 300,000 miles in general-duty use, exceptional shear stability to protect gears, and enhanced anti-shudder and clutch durability. Trusted by professionals and backed by outstanding user reviews, this 5-gallon pail delivers superior performance and value for demanding vehicle maintenance.
| ASIN | B0977Q8S49 |
| Best Sellers Rank | #14,337 in Automotive ( See Top 100 in Automotive ) #59 in Transmission Fluids |
| Brand | Castrol |
| Brand Name | Castrol |
| Container Type | Pail |
| Customer Reviews | 4.8 out of 5 stars 312 Reviews |
| Global Trade Identification Number | 00079191219638 |
| Included Components | Transmission Fluid |
| Item Form | Liquid |
| Item Type Name | Full Synthetic Transmission Fluid |
| Item Weight | 38 Pounds |
| Liquid Volume | 640 Fluid Ounces |
| Manufacturer | Castrol |
| Material | Synthetic |
| Model Number | 15E2E0 |
| Number of Items | 1 |
| Package Information | Pail |
| Part Number | 15E2E0 |
| Recommended Uses For Product | Automotive |
| SAE J300 Viscosity Grade | 5W-40 |
| Specific Uses For Product | Specific vehicle and transmission types, enhancing performance and longevity |
| UPC | 079191219638 |
| Unit Count | 640.0 Fluid Ounces |
| Warranty Description | 3 months |
R**E
great quality
great product great value
J**K
Check your manual for fluid type, TranSynd isn't for every transmission
Perfect, Castrol is a quality product and recommend for the Allison 3000 in our 2003 Newmar Diesel pusher. As most all items from Amazon it arrived fast. if your thinking about changing yours, check your manual and make it requires TranSynd, your Allison Transmission will Appreciate it.
J**X
Excellent value
Excellent value for complete service of your Allison transmission
M**H
Specified oil and thus does the job well
Specified oil for the cummins transmission and thus does the job well.
L**R
SAVE YOUR CASH
I looked at this product for a transmission service - double flush takes 8 quarts times 2 - so four gallons at about 45 bucks per gallon = 180 dollars. Here you get five gallons for about 160 dollars. Save 20 and have a gallon in reserve! And don't worry about kicking over five gallons onto your garage floor - this comes with a pour spout! They even deliver it laying on its side.
M**S
Good
Good
J**F
Good quality for Allison MD3060 transmission.
Transmission runs cooler in my freightliner motorhome with this while towing my jeep.
J**F
Good product, good shipping!
Item as described, followed thru with initially committed receive date - Thanks
Trustpilot
2 weeks ago
5 days ago