'98 Chevy Cavalier- Weird Noise
My sister drives a '98 Chevy Cavilier. Yesterday she filled her car with a bottle of 10W30 oil. (No one supervised this, btw.) She drove it a couple blocks an hour afterwards and noticed nothing.
Today, she went out and started it. It started normally, she got a couple blocks away and it started making an agressive "grinding, booming(?)," noise. It doesn't happen in park, only when accelerating.
Any insight you could give would be awesome.