the antifreeze doesnt leak into the oil, it goes into the intake manifold, it can go in the oil, it can leak outside, it can leak into the earl, it can do one, a combination or all of the above, but just because it does one doesnt mean it does the other two, if you do the work yourselfe and understand how the moter, cooling system, and oil systems work, it will make sence when you look at it