Keith,
From what I understand from your description, you are talking about a slight sweating at a low pressure hose connection in your hydraulic system. If that is correct, there is nothing to worry about. The condition is fairly common, and rarely develops into a problematic leak. I have a low pressure hydraulic hose that has been sweating at a fitting for years, and it has not bothered my enough yet to change it. However, if it starts dripping, a replacement hose is in order.
Gerald