Carl "Cranky" Case is a Planezoil delivery truck who appears in Planes: Fire & Rescue.
"Since the beginning of air racing, Planezoil has been synonymous with superior quality oil. Carl "Cranky" Case, the Planezoil delivery truck, is very proud of that heritage. The original air racing oil, Planezoil was a formula of engine oil viscosities that mechanics simply called "plane's oil". Over time, the name for the formula stuck and became just "Planezoil". With a cargo capacity of 16,000 pounds, Carl travels throughout the Midwest delivering to mechanics and engineers like Dottie who swear by Planezoil."
- "Meet the Planes: Fire and Rescue". Disney Books.