OK, that's funny! This is at least the forth time the coolant is completely replaced this year (me, the first and last time it drained due to leak and the time at the deal when they reinstalled the radiator). I still have at least 2 gallon of coolants from the old days. Good thing I stocked up for the cars way back when. For a while, I thought about giving them all away.You will want to do a really good coolant system flush before you put the new part on it and new antifreeze in it.