What is the creamy colored fluid coming from the coolant tank of a 1992 Honda Accord Lx?

if it is a creamy color coming from a radiator look in the oil by looking at the inside bottom of the cap,if it is creamy too,then you have a blown head gasket. that creamy color is water and oil mixed here is a better answer if the coolant in tank is creamy you have water getting in oil you could have a blown head gasket, a cracked block or a cracked head all vehicles will get some creamy looking stuff on radiator cap as this is caused by condensation as there is moisture in every thing also check to see if oil level in engine is higher that waht it thould be that is a really good indication of water adding and mixing with the oil