What is specification for the rear differential fluid a 2007 E350 Ford van?

The 2007 Ford E-350 van's rear differential fluid specification depends on the axle ratio. Ford used several different axle ratios in the E-350 that year. You MUST check the sticker on your van's driver's side doorjamb or your owner's manual to determine your axle ratio. This sticker will tell you the recommended differential fluid.

However, generally, for a 2007 Ford E-350 van, if it's a standard rear axle (not a limited slip), you'll likely need:

* 75W-140 GL-5 gear oil. This is a common specification for heavy-duty applications.

Crucially, if your E-350 has a limited-slip differential (LSD), you will need a specific limited-slip differential fluid. Using the wrong fluid can damage the limited-slip mechanism. The doorjamb sticker or owner's manual will clearly indicate if you have an LSD and specify the correct fluid.

Do not rely solely on this information. Check your vehicle's documentation for the precise specification. Using the incorrect fluid can severely damage your rear differential.