@beardo, keep that transmission full of oil if it's leaking, I had a bearing go out in my getrag 260 before I found out about that, I definitely saved it but now I have a grind noise at a certain RPM. thankfully getrag 260's are tanks and I drive an e30
also you might have to jack your car up to get to the fill hole. there should also be labling on the side of your transmission saying what kind of oil or indicating, if not make sure through other means.
the basic test for a lot of transmissions like this is to simply stick your finger in and if you feel liquid at the bottom of your finger then there's enough oil in there.