AMSOIL 10W-30 100% Synthetic Small-Engine Oil (1-Gallon jug) is engineered specifically for commercial-grade small engines that run hot, work hard, and operate for long hours. It delivers outstanding wear protection, oxidation resistance, and deposit control to keep equipment running reliably in any season. Designed for zero-shear performance, the formula maintains viscosity even under severe mechanical stress. Ideal for lawn mowers, pressure washers, generators, snow blowers, compact tractors, and other air-cooled or liquid-cooled small engines. AMSOIL's advanced synthetic technology extends engine life, reduces oil consumption, and protects against sludge, varnish, and corrosion. Made in the USA with premium materials for demanding professional and residential equipment. AMSOIL is not affiliated with or endorsed by any OEM manufacturers.