A blown Oldsmobile cylinder head gasket set on your vehicle will damage the cylinder head and the engine block if that condition is not addressed in a short time period. The damage is generally in the form of pitting on the surfaces where the leak is occurring. There is a cylinder head gasket set between every cylinder head and the engine block on all models from this, and every, automaker. The only time this set of gaskets need to be changed is due to a break in the seals this gasket makes between the different fluids and pressure areas on your Oldsmobile. When there is a break in the cylinder head gasket set between the water jackets and a cylinder head, the owner of the vehicle will notice white smoke coming out of the tail pie. This white smoke is the coolant changing from a liquid to a vapor. If blue smoke is coming from the tail pipe, then an oil channel is now in contact with a cylinder and an excessive amount of oil is being burnt. Not only will there be blue smoke out the tail pipe, but the spark plug would foul out due to the extra oil present in the combustion chamber and the cylinder head gasket set will need to be replaced on your Oldsmobile. The most damaging situation of having a blown Oldsmobile cylinder head gasket set is when the oil and water jackets have a break their seals. This is when coolant will seep into the engines crankcase. It is the coolant that will reduce the effectiveness of the lubrication causing the bearing to become damaged. The oil will also begin to foam. If any of these conditions are present on your Oldsmobile then the replacement of the cylinder head gasket set is required before the engine is damaged beyond repair.