I am looking for information on valve exercising programs. We currently do not have a program in place and I think it is time we do. What I am questioning is, how frequent, the type of lubricant to apply while exercising and what to apply after the exercising is complete? I have looked around and WD40 and petroleum jelly are what I see talked about the most. Maybe these are the best products to use but it seems like a home remedy to me. Also any other suggestions would be helpful. Thanks in advance for your help.