Well, the oil in coolant indicates a blown head gasket.
The plugs not wanting to come out try warming engine to operating temp and try.
If still won't come out spray with a penatrating oil and let set till for about 2 -3 hours. Don't worry if you break any off since you will have to take the head off to replace the head gasket.
Thursday, July 10th, 2008 AT 6:55 PM