Oil filters are designed to clean oil for proper operation and lubrication of the engine, and changing the oil every 3000-5000 miles (depending on make) is key to that engine's life. The oil and filter change is the #1 routine maintenance procedure performed by DIYers and professionals, and our No-Mess Filter Wrench device makes it so much easier and cleaner! Oil won't leak from the filter as the filter is unscrewed, and you'll avoid a potential "hot oil" safety issue. Patent-pending.