Seasoning a grate demands a very high temperature. So, it is important to use the right type and genuine quality of the oil. Most grill manufacturers recommend peanuts and canola oils. The reason is that these oils have a smoke point over 450 degrees. Alternatively, you can use vegetable oil, avocado oil or sunflower oil. And to do the job properly, you will need tools like a spray bottle for finely coating the grates with oil, a grill brush and a paper towel.