Based on this product's specifications, here are some alternatives and similar models
Engine oil for lawn mowers Briggs & Stratton SAE 30 0.6 L (MPN 100005E)
Summary description:
Briggs & Stratton SAE 30 engine oil, 0.6 L, designed for air-cooled small petrol engines in lawn mowers and garden equipment. Single-viscosity SAE 30 formulation suitable for specified operating temperatures, provides lubrication for moving parts and helps protect against wear and deposits. Supplied in a 0.6-liter bottle for routine maintenance and oil top-ups.