I had a similar experience at STS (bought out by Mavis) that resulted in it blowing something out at the top of the engine. It was quite a few years ago so I don't remember what part is was exactly, but luckily it was something minor. It made a hell of a mess though. My entire engine compartment had oil spattered everywhere. To add insult to injury, they "fixed" it with a zip tie (I replaced the part the next day).