They've got a resin impregnation that holds onto the crud while maximizing oil flow to keep all of your engine's gears bathed in lubrication so they don't wear out from friction and overheating. Custom crafting to your vehicle's specs means these Caravan oil filters have the exact fit that installs easily and stays on tight as a drum without any leakage. And, we sweeten the deal even more with our AutoAnything 1-year lower price guarantee, plus free shipping and long life warranties, for a mind blowing bargain you won't find anywhere else!