Yep, It's on the bottom of the oil pan.
OK, Thats enough sarcasim. Can you give us the Make, Model & Serial number of the truck??
Little things like this help us help you when you have a question.
You wouldn't walk into a car parts store and say"I need a filter" would you without getting the deer in the headlight look.
There is a wealth of information, tips & hints to share here, there are a LOT of experienced techs that read this site and are willing to help.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.