DOWNLOAD THE APP
Customer Services
Copyright © 2025 Desertcart Holdings Limited
DOWNLOAD THE APP
⚙️ Shift to superior protection and speed with Valvoline FlexFill – gear oil redefined!
Valvoline FlexFill SAE 75W-90 Full Synthetic Gear Oil is engineered for high-performance automotive differentials and manual transmissions. Featuring a patented pouch for 3X faster, mess-free filling, it offers exceptional thermal stability up to 300°F, enhanced wear protection, and superior load carrying capacity. Ideal for severe service, towing, and off-roading, this gear oil includes a limited slip friction modifier and extreme pressure additives to maximize gear life and smooth operation. Trusted by professionals and rated #1 in gear oils, it’s the ultimate choice for demanding drivers.
| ASIN | B08K9CGB6Y |
| Best Sellers Rank | #210 in Automotive ( See Top 100 in Automotive ) #1 in Gear Oils |
| Brand | Valvoline |
| Customer Reviews | 4.8 4.8 out of 5 stars (3,648) |
| Date First Available | September 28, 2020 |
| Flash Point | 302 Degrees Fahrenheit |
| Item Form | Oil |
| Item Weight | 7.56 pounds |
| Item model number | 889785-CS |
| Liquid Volume | 32 Fluid Ounces |
| Manufacturer | Valvoline |
| Manufacturer Part Number | 889785-CS |
| Material | Synthetic |
| Model | FlexFill |
| Number of Items | 4 |
| Package Information | Pouch |
| Product Dimensions | 13.1 x 9.37 x 4.12 inches |
| Recommended Uses For Product | Automotive |
| SAE J300 Viscosity Grade | 75W-90 |
| Specific Uses For Product | Automotive differentials and transmissions |
| UPC | 074130047433 |
| Unit Count | 128.0 Fluid Ounces |
| Upper Temperature Rating | 300 Degrees Fahrenheit |
| Viscosity | 75W-90 |
C**F
Great Gear Fluid without Breaking the Budget!
Valvoline is great rear-end fluid for my Ford 8.8. Added during a recent fluid and differential cover change. WIth the limited slip additive and Flexfill gear oil, my differential hooks up much better and is definitely smooth as butter. The gear oil bags/packaging are very useful but I still used a hand pump/hose to add back the new oil to the differential. Highly recommended for the health of your differential!
C**E
Great design & product!
Perfect, used as a maintenance item on a 2019 Ram Rebel as the differential fluid on the truck needed limited slip additive. So far the fluid is doing its job with no leaks. I love how easy it is to fill the differential with the baggy design for the product, brilliant! Great value for the money!
K**F
Well made and easy to use.
Flex bag makes it so easy. Already has the Limited Slip Additive. Perfect match for my 2016 RAM 1500. Rear rear differential.
C**Y
Nicely replaced the fluid in my 2000 excursion
These Valvoline lube packs made refilling my differential clean and easy. My Ford excursion had over 220,000 miles and it was time to change the differential fluid along with transmission fluid and oil and transfer case fluid. After this lubrication service I was pleased to receive a 15% boost in fuel economy above the normal 10 and a half miles per gallon I had been getting.
A**7
Good oil and bottle
The bottle design saved me from having to buy a small hand pump for my transfer case. Overall the fluid is synthetic and at a reasonable price point so it’s a good fluid to use. Of course if you’ve never used gear oil before the smell is normal due to limited slip additives.
I**N
High quality oil
High quality gear oil and easy to use.
B**D
Gear oil is OK with the soft pouches. I didn’t like.
The gear oil was fine just don’t think I’d ever buy these soft pouches again. If you accidentally squeeze it, the wall comes out of the top and gets all over everything.
C**R
2020 WK2 Grand Cherokee Diff fluid
Used these to change the differential fluids in my 2020 Jeep Grand Cherokee. I know it's not the recommended weight but I could care less about the fuel efficient "benefits" of using the lighter weight. Great quality for a great price. Runs great
R**Q
Great product for my Durango 2018. Highly recommend
A**O
El embalaje fácilita la aplicación del aceite al diferencial, el aceite se ve muy bien en tonalidad y viscosidad. Además ya le hacia falta el cambio a mi unidad.
R**X
Très bon service et rapide huile de très haute qualité , Merci.
J**N
great gear oil for my tundra, shipped super fast at a great price
A**6
Good enough
Trustpilot
1 month ago
2 months ago