ok so I was looking at the TJ just a minute ago and have been puzzled... Where is the transmission dipstick in the 4cyl? do you just drain it and re-fill? how much trans fluid do I put in if there is no dipstick. the second question is, is there a better radiator that I should buy, because mine is leaking from the top passenger side. how much do they usually run? should I just stick with a junk yard pull on this? please help.