First time owning an FD and I'm ready to do the oil change any suggestions on tranny and diff fluids

 

Redline mt90 has been the best I've used on my fc. My buddy also loves it in his fd. If you do a search though you'll find this is a hotly debated topic. 75w90 in cold weather and 80w90 in hot is the mazda standard.

For the diff get a good shockproof gear oil. 75w90 is what you'll need, but make sure it's torsen lsd approved. If in doubt grab redline 75w90 gear oil.