Overview If you have a 2019 Jeep Grand Cherokee and you’re seeing oil pooling on top of the engine (or smelling burning oil), there’s a good chance you’re dealing with a common failure: the plastic oil filter housing / oil cooler assembly. These housings can warp over time, the seals can get crushed, or the housing can crack—especially if the oil filter cap was over-tightened. This guide follows a real repair and walks you through how to confirm the leak, access the housing,