Hi all i had to fix,s an oil leak on my wife gen 6 1994 st204 in the oil pan ok got that done but it is not the only one !! it is leaking down the side allso where the timing belt is :( i know most common issus with toyotas this old seem to be the following cam seal ,crank seal ,oil pump seal ,oil pump o-ring but i have never done one ? what is the best way to go about it ? does the engine have to come out ? thanks lots remo