No Idea!

[John Evans]

Found this funnel secured to a pipe protrudung from the basement slab below the utility sink. Home owner was unaware, there is a buried oil tank not far from the sink location. Tank is supposed to be abandoned. Any ideas?

[Bruce A. King]

Looks like they used the funnel to fill the tank with sand.
Not sure if this is allowed in your area or not.

[Wayne B. Wilson]

Just a question if it was a fuel tank and that is a pipe for it did did they use one of the pipes from a drain. normally there is a fill pipe and a vent pipe . I am just curious because of the picture showing similar pipes.

[Robert Samual]

Hello Mr. Wilson,

I am new to this forum and I have visited here because of some plumbing issues with my garden pipes. By seeing your attachments, I can say that definitely its a fuel pipe and used for drain purpose because I've seen the same funnel structure with pipes in one of my friend's basement. I can not help you more than this because I am not aware so much.