hi everyone. i recently purchased a 96 taco. i am going through and changing all of the fluids as i don't know when they've been changed last. i was wondering what to use for fluid(75w90 i think), how much i will need for tranny, transfer case and both differentials. is it difficult to find the fill and drain plugs for the tranny and transfer case? is there a drain on the differentials or do you have to take the cover off? it has a 3.4 and a 5 speed. any help would be appreciated.