????️ AMSOIL 0W‑20 High‑Mileage Synthetic Motor Oil | HM020. AMSOIL 0W‑20 High‑Mileage Synthetic Motor Oil (Quart Bottle). Engine Longevity • Sludge Reduction • Leak Protection. TheAMSOIL 0W‑20 100% Synthetic High‑Mileage Motor Oil is specially engineered for vehicles withover 75,000 miles.