Permatex Rust Dissolver Gel chemically dissolves rust from all iron and steel surfaces. Brush or spray on, and then wash the rust off with a cloth. Using this gel replaces the hard job of sanding and scraping. Rust Remover Suggested Applications: Iron and steel surfaces on cars, trucks, motorcycles, tractors and trailers 8 oz Bottle MPN: 81756 Instructions Wear rubber gloves when using. Scrape or wipe loose dirt and rust flakes from surface. Brush on liberally and work into pitted areas. Leave on 5-10 minutes. Wipe off painted surfaces immediately. Wash or rinse off with fresh water. Repeat applications for heavily rusted areas. Allow product to remain on surface longer if necessary. Limit applications to five minutes for chrome or plated surfaces.