99' Olds Delta 88 Stalls

99' Olds Delta 88 started overheating and using antifreeze. Driving down the freeway and she started acting up. While pulling off at a gas station she would not accelerate. Got to the station she died check the antifreeze again and there was none which was strange because I just checked before getting in the car and it was full. At the station I filled it back up with antifreeze and tried cranking her over and nothing. I heard that the intake manfold upper and lower could cause this. Could this be true? Thanks

Stop here, a gross loss of coolant indicates a seriois internal leak, attempting to start could cause internal damage, intake manifolds are the most common cause of this, also now the oil is contaminated, get it to a shop, they will know what is what.