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Your vehicle’s differential is one of the most often overlooked maintenance items. Regular fluid changes are important, just as they are with your brakes, transmission, and engine. Obviously, your differential sees lots of hard use. High heat and constant metal on metal contact are all in a day’s work for your differential. If you aren’t sure when you last had your differential serviced, it’s a good idea to get the job done now. Take good care of your car – it’s always been there for you so it deserves the very best. Research your car or truck’s recommended fluid type and capacity, gather your tools and plan a relaxing Saturday around servicing your differential. We’ve compiled a list of four of the best differential fluids on the market. These lubricants work just as hard as your drivetrain, keeping everything operating smoothly for tens of thousands of miles under extreme conditions.