Your first picture is the speedo cable, might just see if it is tight, love white trucks myself.
It is common for the cam plugs on the back of the heads to leak and run down all over the transmission. Do as Johnny said and degrease/clean it up then you can see the source and identify the fluid.

Welcome to the wire.

What city do you live in?


99 Montero....15mpg! Sold (so sad)
02 Jetta TDI....48mpg!
03 2500 Ram QCLB Cummins....18mpg
02 2500 Yukon XL, We out grew the montero, at least it has one locker.....13mpg (sold)
01 montero limited