Car has a new raidator water pump just replaced the head gasket and test drove it to a market 15 min away tep spiked heard a pop sound made it to the market car was way over heating turn on heater but it was only blowing out cold air wait for temp to cool filled with water ran water over raiator and head thwn shut car off and went to restart it it would just turn over towed it back and three days later check fluids and found water in the oil and oil in the water