Tow driver took a look under the car and immediately noticed that the oil pan plug was missing. He says that it must not have been tightened properly, and that with the normal bumps of the road since the oil change, it eventually popped off. The car was towed to the dealer. When I finally got home, I saw that there was a puddle of oil in front of my parking spot. That means that the entire thing emptied out between 4:30 p.m., when I got home this afternoon, and 6:15 p.m. when I left for dinner.
Tow driver says that my engine is likely shot. I'll know when the dealer looks at it on Monday. My question is, what responsibility does the shop that did the oil change (which was not the dealer) bear for this? Is it as obvious as the tow driver made it sound that their negligence was the only possible cause? Are there any steps that I should take now to protect myself for what may be a legal battle? The tow driver was kind enough to take a picture of the missing plug (below), and I likewise took a picture of the puddle of oil. I also have documentation of the oil change.
Your input is appreciated!


