What kind of oil does a 2017 Ford Ranger diff take?
The most common answer is that the differential on a 2017 Ford Ranger typically uses a synthetic gear oil in the 75W-90 range (GL-5). If your Ranger has a limited-slip or special axle, you may need 75W-140 with a friction modifier. Because axle configurations vary by market and trim, always verify with the owner’s manual or Ford’s fluids guide.
What affects the oil choice
The Ranger’s differential oil requirements depend on the exact axle type (rear and, if equipped, front), whether the axle is open or has a limited-slip differential, and regional specifications. The information can differ between markets and model years, so confirming the precise spec for your vehicle is essential.
To help you identify the correct specification, use the following steps:
- Consult the vehicle’s owner’s manual or Ford’s official fluids guide for the exact grade and viscosity for your axle.
- Inspect any axle code stickers or stamping on the differential or in the build sheet to determine axle type and whether a limited-slip differential is installed。
- Determine if you have a 4x4 (front differential present) or just a 2WD setup, as this can affect the recommended fluid for front axles.
- If you’re unsure, contact a Ford dealer or a qualified mechanic with your VIN to confirm the correct specification.
Identifying the exact axle configuration and LSD status will guide you to the precise oil grade and any modifiers Ford requires.
Oil specifications by axle configuration
Below are general guidelines commonly associated with Ford-powered Ranger axles. Use them as a reference, but verify against your vehicle’s manual or dealer guidance, since regional differences exist.
- Rear differential with open (non-LSD) axle: 75W-90 synthetic gear oil meeting API GL-5.
- Rear differential with limited-slip differential (LSD): 75W-140 synthetic gear oil with a friction modifier (as Ford specifies for the LSD in your axle).
- Front differential (4x4 models): 75W-90 synthetic gear oil meeting API GL-5 (some configurations may specify 75W-140 under certain conditions or LSD scenarios; confirm for your build).
- Special-market or off-road/HD axles: Ford-approved gear oils from the Motorcraft line may be recommended, with exact grade depending on the axle code (e.g., 75W-140 synthetic with modifier for LSD or heavy-duty use).
With the exact axle configuration identified, you can source the precise gear oil and any required friction modifiers to ensure proper lubrication, wear protection, and performance.
How to verify the correct oil for your Ranger
When in doubt, rely on authoritative sources. Check the owner’s manual, the axle code tag on the differential, or contact Ford customer service or a dealership with your VIN. They can confirm the exact Ford-approved fluid specification for your exact Ranger variant and market.
Summary
For a 2017 Ford Ranger, the differential oil specification depends on axle type and whether a Limited-Slip Differential is present. In most cases, use 75W-90 synthetic gear oil GL-5 for open differentials, while LSD-equipped axles typically require 75W-140 synthetic gear oil with a friction modifier. Always confirm the precise specification for your vehicle’s axle code and market by consulting the owner’s manual or a Ford dealer, and follow Ford’s guidance for the correct viscosity and API rating. Regular maintenance and using the correct oil helps protect gears and maintain performance.
