Yes, you can use oven cleaner or diatomaceous earth to treat old gear oil stains on concrete or asphalt driveways. For concrete driveways, spray the affected area with oven cleaner, let it sit for a few minutes, and then scrub with a stiff brush. Rinse the area thoroughly with water. For asphalt driveways, sprinkle a generous amount of diatomaceous earth on the stain, let it sit overnight, and then sweep or hose off the next day. These methods may help break down and absorb the old oil stains, but complete removal may not be possible.