Where do you add the tranny oil on a 2000 fxdwg 88ci?

To add transmission oil on a 2000 FXDWG with an 88ci engine, locate the transmission fill plug, which is typically found on the right side of the transmission case. Use a 1/2-inch drive socket or a wrench to remove the fill plug. Add the appropriate type and amount of transmission oil until it reaches the fill hole, then replace the plug securely. Always check your owner's manual for the specific oil type and capacity.