Havn't ever filled my tranny on a e36, if like a e30 pretty simple, Theirs a second bolt to remove @ the fill line, once leaking out on a level seface it's full (ATF). 17mm hex nut I beleive.
As for the diff 1L of normal type 80/90 gear oil, the smelly stuff.
Bently says 1.1L
I only put in a litre of synthetic 75/90 while I had it on the bench.
Need about 2L (spilage, pump line priming) to gravity feed it with diff on the car, bit of a PITA on a 318 to get the 14mm hex in, the spare tire well is too close to use a ratchet.
"They say ignorance is bliss..... I don't know what the Fu*k that means but I'm pretty happy". Ricky Trailer Park Boys.
Current Mods....X-Brace, Stromung Cat Back Exhaust, 17/225/45 M3 Replicas, HotBits Adjustable Coil Overs, 40% LSD 3:91 Diff, E30 Gearbox, Boosted.