








⚙️ Shift to superior gear protection with Valvoline FlexFill – where innovation meets performance!
Valvoline FlexFill SAE 75W-140 Full Synthetic Gear Oil is a top-tier lubricant engineered for hypoid differentials and manual transmissions. Featuring a patented pouch for 3X faster filling, it offers exceptional thermal stability, extreme pressure additives for enhanced load carrying, and limited slip friction modifiers for optimal clutch performance. Rated #1 in gear oils with a 4.8-star customer rating, it’s designed to extend gear life, improve fuel efficiency, and excel in severe driving conditions.



| ASIN | B08KB5LTJM |
| Best Sellers Rank | #272 in Automotive ( See Top 100 in Automotive ) #1 in Gear Oils |
| Brand | Valvoline |
| Customer Reviews | 4.8 4.8 out of 5 stars (3,574) |
| Date First Available | September 28, 2020 |
| Flash Point | 288.5 Degrees Fahrenheit |
| Item Form | Oil |
| Item Weight | 7.74 pounds |
| Item model number | 889787-CS |
| Liquid Volume | 32 Fluid Ounces |
| Manufacturer | 889787-CS-FBA |
| Manufacturer Part Number | 889787-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 |
| Specific Uses For Product | High-performance vehicles, Corrosive or thermally challenging environments |
| UPC | 074130047464 |
| Unit Count | 128.0 Fluid Ounces |
| Upper Temperature Rating | 1 Kelvin |
| Viscosity | 75W-140 |
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**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.
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!
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.
R**S
TOP TIER Valvoline 75W-90 Extended Protection Gear Oil!
Valvoline is a top-notch synthetic differential, 75W-90 Gear Oil, that I used in servicing my 2019 Mercedes GLC300 for scheduled maintenance. This gear oil comes in a 1qt, flexible pouch with an easy fill spigot to fill the differential (front or rear.) The vehicle drives smoothly without hesitation or leaks. I highly recommend this Valvoline Extended Protection Gear Oil.
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
Y**D
Excellent idea for hard to reach areas.
So easy to use under vehicle. Just squeeze and fill up.
V**T
Convenient and works great
Works great. Convenient and mess free. Smells terrible.
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.
J**N
great gear oil for my tundra, shipped super fast at a great price
A**A
Great quality
A**6
Good enough
Trustpilot
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