As far as car fluids go, differential oil is one of the most neglected pieces of maintenance. It could be because the effects of not changing differential fluid on time aren't as immediately obvious ...

Your rear differential is one of the most unappreciated parts in your car or truck. It does what might be the hardest job of all of those components, multiplying torque from your transmission and ...

In a rear-wheel, or four-wheel drive vehicle, the differential oil change is probably one of the most overlooked routine maintenance items there is. Luckily, changing this thick, rich-smelling oil is ...

Let's be honest, the average person has never thought about whether differentials even have fluid. They're not like engines, which require oil changes after about 5,000 to 10,000 miles (or 12,500 if ...

Q: I own a 2011 Toyota RAV4 V-6 all-wheel-drive with 59,000 miles. I have pulled a boat and trailer for approximately 2,500 miles since the car was new. At my last oil change the dealer recommended ...

Every time I get the oil changed on my 1998 Toyota Tacoma, the service man tries to sell me an oil change for the differentials. I decline because I don't want to pay the money and I'm not sure if the ...

Q: The owner's manual of my 2004 Honda Pilot recommends regular changing of the "VTM-4" rear differential fluid, which costs more than $100 each time. Is frequent replacement really necessary since I ...