9ALL C-AIRE COMPRESSORS COME FACTORY FILLED WITH SYNTHETIC OIL WHICH REQUIRES NO BREAK-INPERIOD.Oil Level: Check the oil level before each start-up. The oil level must be maintained to the center of the sight glass(unless there is an oil-level mark on the sight glass to indicate otherwise).NOTE: The oil may turn black before the first oil change due to packaging oil in all new pumps. The black color does notnecessitate an oil change prior to first-year annual maintenance as recommended when using synthetic oil.The oil drain plug is located at the base of the pump (see diagram). The oil fill plug is located at the top of the pumpheader (see diagram).CAUTION: Never remove either oil plug while the compressor is running.PERFORMING AN OIL CHANGE1. Remove the crankcase oil drain plug, and allow the lubricant to draininto a suitable container.2. Replace the crankcase oil drain plug.3. Remove the oil fill plug, and fill the crankcase with oil.NOTE: Oil fill capacity is listed on the unit’s serial tag.When the oil level is half way in the sight glass, the crankcase is full.LUBRICATIONCrankcase Oil DrainCrankcaseBreatherCrankcaseOil Fill PortOil SightGlass