There IS a front differential; it's in the transmission. There is a front transfer case, on the rear of the transmission. Change all of the lubes all at once. The ATF is type FZ and not easy to find. Check Amazon.
Ok, so there is a front differential, rear differential and a transfer case. Correct? Just wanted to be 100% sure. When you are saying front transfer case but on the rear (that sorta throws people off.....maybe LOL). Meaning I would need 6 washers TOTAL (front differential drain, front differential fill, rear differential drain, rear differential fill, transfer case drain, transfer case fill).
I plan to just bring it to the shops to do it. If I want them to do ATF I would need to order the Mazda ATF FZ. The differential I may just use whatever they have in stock. Drain and refill ATF only drains that much. You probably need to do it twice and I am not sure if they do any measurement for you or end up over filling or under filling.
Brake fluids at 32k........is that early or can wait a bit?