Profile: Boyer Petroleum Co. specializes in petroleum products. Our product line includes lubricants, filters, fuel additive, washer fluids, and diesel exhaust fluids. Our Mobil clean high mileage is designed especially for cars, vans, and light trucks with more than 75,000 engine miles. This conventional motor oil includes seal conditioner to help prevent leaks in high mileage engines. The Mobil clean high mileage motor oil provides the same boosted cleaning performance as Mobil Clean 5000 to help control the formation of sludge and harmful deposits, and to keep engines cleaner longer.