for a quick update. when I looked into the top of the radiator I saw what I called a almost a 50/50 mix, but after draining the radiator I can see that there is only a small amount of oil in the coolant. But I am sure that there is a problem because she said she had to continually add coolant, and if you pull the dipstick it is a really light colored and has a milky look to it. it runs smooth, so maby it is a front cover leak and not a head gasket. is there anywhere else that water could leak into the oil? my dad put this motor together and I am trying to figure out where he didnt seal it up all the way because it has leaked a water into the motor ever since he put it together. now it is just getting worse.