Find Rear Differential Fluid & Automatic Gearbox Fluid. Explore Front Differential Fluid. Order Differential Fluid Replacement. Buy Car Gearbox Fluid. Maintaining optimal differential fluid is crucial for your vehicle's performance, ensuring gears operate smoothly under high stress. Look for signs of wear such as unusual noises, vibrations, or a burning smell, signaling it's time for a replacement. When selecting a replacement fluid, consider the specific needs of your vehicle?synthetic blends offer superior protection and longevity, while conventional fluids might suffice for less demanding conditions. Always choose a high-quality product to maintain your car's integrity and enhance its lifespan. For installation, follow the manufacturer's guidelines to achieve the best results, keeping in mind that regular maintenance can prevent costly repairs and extend the life of your differential.