How much does is generally cost to change your rear differential fluid?

The average price for a differential fluid change is usually between $150 and $300, depending on the type of differential and whether it's a front-wheel drive or rear-wheel drive vehicle. The cost of the fluid itself is typically around $50 to $100. The labor charge depends on the complexity of the job and what is needed for you make or model vehicle, but it typically runs around $100 to $200.