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★ Top Pick
Honda Pro Honda GN4 Motor Oil - 10W30-1 Quart/-
Honda's own GN4 10W-30 is a straightforward match for the Wave 125's small-displacement air-cooled engine, which runs well within the temperature range this viscosity is designed for. The 1-quart bottle covers a typical oil change with minimal waste, since the Wave 125 holds roughly 0.8 liters. Being JASO MA-rated, it's also safe for wet-clutch systems. Caveat: it's conventional oil, so serious riders in consistently hot climates may prefer a semi-synthetic alternative.
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