Although it will be easier to clean off, it does not fully protect from oil and grease. We recommend you remove oil and other fluids from the sealed surface as soon as possible using a mild cleaner.  If the treated surface becomes contaminated with dirt, dust, pollen, or other substances, it will impede the visual water beading effect.  Simply pressure wash the surface to remove the contaminates and the product will continue to repel moisture.  Generally, a light pressure wash is all that is required.  If a cleaner is needed, we recommend using a mild cleaner.