Looking for some clarification. Forgive my ignorance, but I have a 2007 FWD RAV4 with a 4 cyl engine. Is the front differential part of the transmission and does it share the same ATF fluid with the transmission? I'm asking because I recently drained and refilled my transmission, but want to make sure I don't have to drain and refill the front differential too. In other words, does the front differential share the same ATF fluid with the transmission? Thank you.