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 ...

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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 ...

Changing gear oil is one of those often-forgotten maintenance items on our rigs. Whether it's the smell of gear oil, the disposal of gear oil, or the mess that can sometimes come from popping a cover, ...

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 ...