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viscosity

  1. Oil viscosity and shift assist

    RT Series
    Bike calls for 5w-40. Dealer put in 15w-50 at 6000 mile service. I've ridden nearly 3000 miles since then and I swear the shift assist does not work as well. No, I've not had the software upgrade as of yet, so the only variable is the change in oil viscosity.
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