Oil and Maintenance Guide for 2008 Honda FourTrax Rincon 680
Before You Service the Engine
For the 2008 Honda FourTrax Rincon 680, planning an engine service involves checking the correct lubricant application and following the proper refill procedure. Use the proper level-check method for this machine, and verify product suitability instead of relying on a catalog name alone.
What oil weight does a 2008 Honda FourTrax Rincon 680 need?
The oil grade identified for this model is 10W-40. Viscosity is only one part of selecting oil: the product must also meet the engine’s applicable specifications.
How much oil does a 2008 Honda FourTrax Rincon 680 take?
The available engine-oil capacity figure is 3.06 quarts. The amount added during a routine drain may differ from the listed capacity; use the correct level-check procedure when refilling.
Why does four-stroke engine oil need the right application rating?
Engine oils differ in additive packages and friction characteristics. Some powersports engines share oil with a wet clutch or transmission, so matching the manufacturer’s oil requirements matters in addition to viscosity. This listing does not by itself confirm the clutch design.

