I had my boat out this am for freshwater stripers and when I got back to the house I noticed that on the lower unit there is a cap that I remove to remove a bolt to drop the lower unit for changing an impeller.<br />My question is <br />1- is this any big deal, i will replace it ASAP<br />2-do I need to do anything like change the lower unit gearcase oil or is this sealed and just access to the bold. ( i can not remember )<br />thanks for any help!!!