The Mustang F-150 Bronco 8.8 Rear Axle Differential 80W-90 Gear Fluid Change Kit is an essential tool for any Mustang owner. This kit includes all the necessary components to easily replace the rear axle differential fluid, ensuring optimal performance and longevity of the transmission. The kit features a 80W-90 high viscosity gear fluid, which provides excellent lubrication and protection against wear and tear. The step-by-step instructions included with the kit make the process simple and straightforward, even for inexperienced mechanics. With this kit, you can save time, money, and frustration, as you'll avoid costly trips to the dealership for fluid replacement.