Liqui Moly Top Tec 4600 5W-30 fully synthetic engine oil, 1-litre bottle. Modern low-SAPS (low-ash) formulation engineered for vehicles equipped with Diesel Particulate Filters (DPF) and modern emission control systems. ACEA C2/C3 specification — designed for engines requiring DPF-compatible oil. Carries an extensive OEM approval list including BMW Longlife-04, MB 229.31/229.51/229.52, VW 502 00, VW 505 00, VW 505 01, Ford WSS-M2C917-A, GM dexos2, GM LL-A-025, GM LL-B-025, and Fiat 9.55535-S3. The 1-litre bottle is ideal for top-ups between services. The Top Tec 4600 is a particularly strong fit for the BMW X3 F25 sDrive 18d (N47 D20 C diesel engine) — the low-SAPS formulation protects the DPF over long service intervals.