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SILBOIL LEGEND-PLUS ULTRA SAE 15W-40 (API SL/CH-4 Certified) this is a advanced high-mileage multi-grade engine oil specially formulated to keep your vehicle running smoothly, whether you drive a passenger car or a heavy commercial vehicle. Designed for superior wear protection, it minimizes friction, reduces engine deposits, and enhances overall efficiency. With excellent thermal stability, it performs exceptionally well in extreme temperatures, preventing sludge buildup and ensuring a cleaner, longer-lasting engine.SILBOIL LEGEND-PLUS ULTRA meets API SL/CH-4 industry standards, making it a reliable choice for enhanced fuel efficiency, smoother performance, and cleaner emissions. Whether you're a long-distance trucker, a daily commuter, or a service professional, this premium 15W-40 engine oil is built to support high-mileage engines with consistent protection and durability. Upgrade your engine oil today and experience smoother rides, better mileage, and long-lasting engine health with SILBOIL LEGEND-PLUS ULTRA.