What size Allen wrench for oil cooler 1997 expedition?

For a 1997 Ford Expedition, the oil cooler typically requires a 5/16-inch Allen wrench for its bolts. However, it's always a good idea to double-check the specific vehicle's manual or confirm the size with a physical inspection, as variations may exist. If you're working on a specific component, ensure you have the right tools handy to avoid any damage.