Scooby-Doo! and You: The Case of the Freaky Oil Fiend

'Scooby-Doo! and You: The Case of the Freaky Oil Fiend' is a children's book in the Scooby-Doo! and You: A Collect the Clues Mystery series published by Scholastic.

Premise
The Scooby Gang are crossing the oil fields of Texas! An old map brings them to a haunted oil refinery. There they meet a creature completely made of ooey, gooey, icky, sticky oil. And it has managed to scare all the workers away from the refinery! Scooby-Doo and his pals can't pass up the chance to solve a mystery this slick.