jimbo970 wrote:...Do we need to add oil to the motor at any time?
No as lime said it's grease according to his dealer. In that case the only way it will need service is if it overheats. The grease will be changed to oil most probably if overheated and you will get an indication (a bit of oil leaking out).
I just reach through the hole in the cover occasionally and check the temp (carefully!). If it's too hot to touch just keep an eye on things and possibly remove the cover and either put a fan there to cool it or ad a muffin fan as highlander did. As I said in my previous post, I have had good luck changing the feed stroke and timer settings to make the motor run less to get the same amount of coal.
From what I have seen on the forum these motors do not have a high failure rate. Lime 4X4's case seems to be the exception rather than the rule.