I have 4 spectrum engines and the directions advise asking the hobby shop guy how to lube. What is up with that, Why wont Bachman tell you how? I have a shay, climax and a berks and some other steamer I don't know what it is. I basically spray them with wd 40 and then some 3 in one oil. I let them set a day or two in a paper towel. Is there a better way or product to use/ As to grease I am not about to open them up for that. If it isn't greased when assembled that is to bad, I will lose parts and mess them up in some way to be sure. Your comments please.