RE: Earthquake 3.5
just remembered that your Earthquakes have a 2-speed tranny so you only have a front and rear differential. The 2-speed trannys should be kept dry as far as I know. Only the diffs need the oil. Some folks on here have posted that they appliy a very small amount of grease to the tranny gears but most recommend to keep them sealed and dry. Others may recommend to lube the tranny bearings but this needs to be a very controlled event so that excess oil does not get into the rest of the tranny.
Hope all that helps