Total Rubia Fleet HD 500 (20W-50)-4L is a robust multigrade mineral engine oil engineered for heavy-duty diesel engines in commercial trucks and off-road equipment. Its Clean-Shield Technology helps maintain engine cleanliness, control deposits, and ensure dependable protection even when operating with high-sulfur fuels. Formulated to deliver strong durability and wear resistance, it is suitable for engines that require performance consistent with API CH-4–grade lubricants.