#1
★ Top Pick
Suzuki ECSTAR V7000 10W-40 Marine 4-Stroke Engine Oil, 2 Gal (990C0-01E30-GLNx2
Suzuki's own ECSTAR V7000 10W-40 is a straightforward match for the Gixxer SF 250 since it meets the viscosity spec Suzuki recommends for the bike's 249cc single-cylinder engine, and the factory-branded formulation means you're not guessing at compatibility. The 10W-40 weight handles typical riding temperatures well and keeps the wet clutch behaving predictably. Honest caveat: this is a marine-labeled variant, and the 2-gallon bulk format is overkill unless you're doing multiple back-to-back oil changes.
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