"every year" ????
You're suppose to reset the OLM every oil change, not every year.
Its not "Mandatory" per say but Highly suggested if you wish it to be accurate.
2SS / RS / A6 Cyber Gray Metallic | Beige Int.
Current Modifications: C.A.I. Inc. CAI, Vmax Ported TB, Dynatech Headers, Flowmaster AMT Cat Back, MSD Plug Wires, Vector Motorsports Tune, Pfadt Drop Springs / Trailing Arms / Swaybars / End Links, Hotchkis Max Brace, Stainless Braided Brake Lines
2011 Modifications: Pedders HD Diff Mounts (EP1167HD), Pfadt Engine Mounts / Solid Subframe Insert, L99 to LS3 Conversion Kit, LS7 Lifters, Ported Intake Manifold