If you're absolutely set on using a gear lube which is officially certified to meet Ford's specific spec (WSP-M2C197-A), then I'm pretty sure that you're going to be limited to the factory-specified lubricants. I believe this requirement will eliminate the likes of Amsoil and Redline for example. I am personally not comfortable with using oils which are not certified. Lastly, I will not consider any "boutique" oils which are not certified to meet a certain spec while claiming that it meets or exceeds the performance of the spec. What would be better options (if any) to replace the factory fill? I think I'd like to go with synthetic oils in both units.Īlso want to stick with the OEM spec'd 80w-90 weight in the rear differential (will not consider a 75w-90) since the cold viscosity is so much lower (from 7.0 cSt to 4.1 cSt minimum) when going down from an 80 to a 75.
The factory fill PTU fluid is synthetic 75w-140 Motorcraft XY-75W140-QL conforming to the following specs: WSL-M2C192-A, GL-5. I also need a replacement fluid for the PTU (power transfer unit or transfer case). The factory fill rear differential fluid is a dino 80w-90 Motorcraft XY-80W90-QL conforming to the following specs: MIL-PRF-2105E, Mack GO-J, WSP-M2C197-A, GL-5 and MT-1 specs. We are also convenient to nearby areas, including Wake Forest, Pittsboro, Cary, and beyond.Need some help with gear oil recommendations for my AWD EcoBoost Ford Flex.
#Rear differential fluid professional
When you are due for a rear or front differential fluid change, the professional auto mechanics are here for you! We proudly serve the greater Triangle area with our 9 locations across Apex, Raleigh, Durham, Carrboro, and Chapel Hill. Differential Fluid Service at Chapel Hill Tire As such, professional insight is key to getting the services you need. Your driving patterns and the roads in your area can impact how frequently you need new differential fluid. When all else fails, one of the most reliable ways to tell if you need a differential fluid flush is by checking with your local auto service mechanic.
#Rear differential fluid manual
However, every car has different requirements, so it is important to check your owner’s manual for recommendations specific to your vehicle. On average, vehicles need new differential fluid every 40,000-60,000 miles.
Then, they replenish the differential with clean, fresh fluid. By flushing out any contaminated fluid, they can ensure your service lasts as long as possible. How Does Differential Fluid Replacement Work?ĭuring a differential fluid replacement, a professional auto service mechanic will remove old, contaminated fluid out of your front or rear differential.
Over time, this fluid becomes depleted, contaminated, and ineffective-which is why your vehicle will require occasional differential fluid changes. As such, differential systems require fluid to lubricate, cool, and protect these components. This process generates a lot of heat while requiring the proper flow of parts moving together. They keep your wheels moving properly through every twist, turn, and winding road your vehicle comes across. What Does Differential Fluid Do?ĭifferential systems rely on a variety of moving parts, like gears, bearings, and more. For your vehicle to move at a constant speed, your wheels need to accommodate this rotational difference. Your left wheel will have to travel a great distance to make this turn happen, while your right wheel only moves slightly. Why? Imagine making a sharp right turn around a street corner. While you might think your wheels all spin together, this is an essential feature required for driving-especially while turning. Mechanic Insights: What is a Vehicle Differential?īefore we dive into differential fluid service, let’s unpack one common question we get from drivers, “What is a vehicle differential?” A car’s differential allows the wheels to spin at different speeds. The professional auto service mechanics at Chapel Hill Tire are here with insight. A Guide to Front and Rear Differential Fluid Serviceĭo I need a differential fluid flush? What does differential fluid do? When it comes to differential fluid changes, this service often raises a lot of questions from drivers.
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