4 cycle engine oil

The listings show SAE 10W‑30 and SAE 30 (sometimes formatted as SAE30/10W‑30).

The listings cover a range of engines, including small outdoor power‑equipment four‑cycle engines, air‑cooled and liquid‑cooled engines, diesel engines, and motorcycle 4‑cycle motors (sport, V‑Twin, cruiser, and off‑road bikes).

The listings say the oils lubricate the engine, clutch, and gearbox and—based on testing—offer up to 10× better friction protection in wet‑clutch transmission tests for smoother shifting versus the cited friction standard.

The listings show common sizes such as 1‑gallon (128‑ounce) containers and 32‑ounce bottles.

The listings reference meeting or exceeding OEM specifications for common small‑engine makers and cite industry standards such as API SL and JASO T903:2016.

They describe enhanced wear protection and film strength, improved engine cleanliness and durability, and list test results such as up to 5× better durability, up to 20% better engine cleanliness, and up to 10× better friction protection in wet‑clutch transmission testing.