Oil mixing in radiator

[The Stone]

Hi, I have a 1999 explorer xls 4x4 with the 5 speed standard. While checking the fluids I noticed that the engine was very low on oil. Once I checked the coolent I noticed a brown, rust colored coolent with a very nasty smell. There is also a layer of rainbow scale on top of the coolent. From what I can tell, no coolent got into the crank case, only oil in the coolent. Any ideas what could have caused this? Thank you.

 

[koda2000]

Blown head gasket, cracked head? What engine? If it's a 4.0L OHV cracked heads are pretty common.

 

[The Stone]

Blown head gasket, cracked head? What engine? If it's a 4.0L OHV cracked heads are pretty common.

Dang, not what I wanted to hear. Yes it is the OHV 4.0L.

 

[Equine Explorer]

Water gasket or head gasket.

 

[The Stone]

Water gasket or head gasket.

By water gasket, do you mean a gasket around the water pump?

 

[koda2000]

By water gasket, do you mean a gasket around the water pump?

I have no idea what he means. Timing cover gasket maybe? Seems unlikely.

 

[Equine Explorer]

Sorry yes water pump gasket but more likely head gasket and or cracked head