#1
★ Top Pick
BMW Motorrad Advantec 5W-40 Motor Oil
BMW's own Motorrad Advantec 5W-40 is formulated specifically for their parallel-twin engines, making it a natural match for the F 850 GS. The 5W-40 viscosity handles both cold Alpine starts and sustained highway running without thinning out under load. It meets BMW's internal approval standards, so you're not guessing at compatibility. Caveat: it costs noticeably more than comparable third-party full synthetics that meet the same specs.
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