Selenia WR Forward 5W30 C4. WR FORWARD 5W30 C4 1L MOTOROLIE ENGINE OIL is a high-quality engine oil part designed to fit your vehicle perfectly. Identified by OE reference SEL16351619, this part offers a seamless fit and dependable performance. Crafted from durable materials made for long-term use, this brand-new Original SELENIA Equipment ensures your vehicle remains in peak condition and performs exactly as intended.