'16 CX-5 sport differential fluid change interval?

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2016 Mazda CX-5 Sport & 2010 Toyota Corolla LE
My '16 CX-5 sport has 102k miles on it. I get the oil changes done at the dealership and they never seem to recommend the differential fluid to be changed. When does the differential fluid need to be changed on these cars?
 
For the 2016 CX-5, check p6-4 through p6-19 of your Owner's Manual. Refer to link below.

Specifically, consider how the vehicle has been and is currently used, in terms of how "hard" the conditions and driving is that the drive train will need to cope with. (It'll drive you to follow the Schedule #1 or Schedule #2 approaches to maintenance. Though, with respect to the diff, transfer case and transmission, it doesn't alter the recommended maintenance intervals.)

Doesn't sound like your Mazda dealer is paying attention to the intervals for the drive train, nor how hard your use of it has been. But it's certainly worthwhile to pay attention to these, yourself, so you keep up with the reasonable maintenance on these parts. Expensive buggers, if they seize up or break.

In short: a 30Kmi interval is recommended if ANY of the "hard" conditions or driving exists. Many members, on the forum, suggest this for long life of the vehicle. If it hasn't been changed that you know of, now's the time.

Have a 2016.5 CX-5 AWD myself. Acquired with ~80Kmi on the clock. Went after all the fluids, once purchased. And have been keeping to a 30-40Kmi interval. (End of this coming year will be time, again. Will drop the transm pan and swap in a new filter as well.)

 
There's no recommendation for normal driving. They mention to change if driven through deep water. I had mine done at 40,000, dealer did it by accident. Wanted the transfer case oil changed but they did the rear diff service instead. Still need to get the transfer case done.

At 102,000 I'd get the diff fluid changed, transfer case and trans fluid drain/fill, also coolant if not already done.

My wife's CR-V required diff change at around 14,000 then every 15,000 after that. Seemed like overkill or dealer profit work.
 
Stick to Mazda SG1 (or a GL-4 equivalent that states SF1 equivalent) fluid to be on the safe side. I was going to use Amsoil 75w-85 until I double checked the required spec, and I didn’t want to use GL-5 in a GL-4 application.
 
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