Is it possible for a partially tightened oil plug to work its way loose after a few thousand miles?

Dear Car Talk | Aug 01, 2002
Dear Tom and Ray:
RAY: Your client is almost certainly right, Jim. Depending on exactly how loose the drain plug is, it can easily take 2,600 miles for it to come all the way out.
TOM: So, you've actually seen this happen?
RAY: Seen it?? I've done it! What happens is that if you fail to tighten down the drain plug properly, the vibrations from the engine and the bumps in the road will just work the plug loose, little by little, until it finally falls out.
TOM: If it's left really loose, it can fall out a few miles from the garage. We hate when that happens, because it makes it so much harder to deny responsibility!
RAY: But to answer your question, Jim, it's entirely possible -- and we think likely -- for a partially tightened plug to take several thousand miles to fall out.
TOM: So the oil-change place owes this lady an engine. And of course the insurance company doesn't want to pay. But that's tough. It's going to have to pay. And you and Johnny Cochran are going to make sure it does. Now go out there and help this nice lady get her engine, Jim.
RAY: Your client is almost certainly right, Jim. Depending on exactly how loose the drain plug is, it can easily take 2,600 miles for it to come all the way out.
TOM: So, you've actually seen this happen?
RAY: Seen it?? I've done it! What happens is that if you fail to tighten down the drain plug properly, the vibrations from the engine and the bumps in the road will just work the plug loose, little by little, until it finally falls out.
TOM: If it's left really loose, it can fall out a few miles from the garage. We hate when that happens, because it makes it so much harder to deny responsibility!
RAY: But to answer your question, Jim, it's entirely possible -- and we think likely -- for a partially tightened plug to take several thousand miles to fall out.
TOM: So the oil-change place owes this lady an engine. And of course the insurance company doesn't want to pay. But that's tough. It's going to have to pay. And you and Johnny Cochran are going to make sure it does. Now go out there and help this nice lady get her engine, Jim.
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