oil in radiator

[bossman525]

my buddies son has a predator 500 an 06 i beleive. he said there is oil in the radiator. what would cause that? any ideas?

[chris hallett]

could be a head gasket,check for bubbles in the radiator when it is idleing,could also be water pump seal. Just 2 places to start

[GE4x4]

When he runs it, does the over flow bottle spray out? If so, it's the head gasket. Happen to my brothers 04 Pred. Changed it and it was gone.