Skip the auto shop - Our mechanics make house calls

Q: Changing diff/transfer case oil to synthetic

asked by on

I've just got a new truck, 2015 F-150. Just hit 2500 miles and I'm going to do an oil change. While I'm at it, I'm wondering if it be worth to also change the transmission differential and transfer case with synthetic oil?

If you want to, you can, it is a very good oil. It doesn’t really need to be done at 2500 miles. That’s way [too early to change the oil]((https://www.yourmechanic.com/article/when-should-i-change-my-oil), in my opinion. But it is very good oil, and if you want to switch it out, you can go ahead and do it. Personally, I would wait to have any of these services done. You’re spending money on something that doesn’t need to be changed yet, but if you are going to do it in the future, you might as well start now.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Cleaning two-stroke and four-stroke engines

2-stroke engines don't have an oil sump. There is no actual oil in the engine to lubricate it. So you have to mix oil with gasoline. Usually, it is in a 40:1 ratio, with 40 parts gasoline and one part...

Q: No rear lights of any kind or working. ( No running, brake, or signal lights)

Check the ground wires on the back of the vehicle as they are either broke or loose. Over time the bolt that holds the ground wire to the frame tends to become rusty causing the ground to have a high...

Q: When letting off the accelerator, the vehicle will jerk (it feels like a slight back and forth movement)

Hello. I think what we are looking for here are possible problems caused by a "torque-reversal" in the drivetrain. That is, when accelerating or maintaining road speed, the engine/transmission and all the drive links (driveshafts, differentials, transfer case, etc.) have...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...