Drove the car and noticed the heat blowing cold air and the temp gauge was hot so pulled over it shut off and towed it home. All the coolant was out of it. Put water in the coolant tank and checked the dipstick and the dipstick had oil and water halfway up it. Took the intake off and found my throttle body was covered. Would I be able to keep using this engine or is it shot? The oil and water that in the engine now has me worried. Would I be able to get a Ford motor or would I have to use the Mazda? Would anybody know what happened?