You should drive a car with a blown head gasket only as a last-resort emergency. The longer you drive the vehicle, the more you'll damage the internal parts. Long-term use can compromise the entire engine. These steps assume that you are at a location where you have access to oil and coolant.
Allow the vehicle to completely cool down.
Place the drain pan under the coolant drain valve at the bottom of the radiator. Open the drain valve by turning it counterclockwise by hand, and let all the coolant drain out.
Dispose of the old coolant in an OSHA-approved container.
Reposition the drain pan under the vehicle's oil drain plug. Remove the oil drain plug, using the 3/4-inch wrench to turn it counterclockwise, letting all the oil drain out.
Remove the oil filter with the oil filter wrench, and replace it with new filter.
Close the oil drain pan plug with the wrench. Use the oil fill funnel to fill the oil pan with 5 quarts of the oil recommended for your particular vehicle.
Close the coolant drain valve by hand, and use the coolant fill funnel to fill the radiator with 2 gallons of coolant---or until the coolant level is up to the level marked on the overflow container.
Drive your vehicle directly to a service station that is as close as possible. You should drive no more than a mile away, as the engine will overheat and be further damaged. Shut off the engine as quickly as possible, and let the mechanics take it from there.
