Something I've been meaning to try for a while to use a more up to date grease for my projector's , I have used a multi purpose one for years and haven't had any problems, maybe its because I do clean off the old stuff and apply new more times than I probably need to but its help keep things running smoothly. I got the Elmo CL out on the table and took off the back to reveal a nice clean set of greased gears, I cleaned off the old and applied the new Silicone based grease on the plastic gears, it's a lot smoother than the old one and seems to give a very nice coating, ran the machine and straight away the grease seems more level around the teeth of the gears, it seems to flow better. Now moving onto the front where the rollers are I used a lithium grease for these as it was for bearing applications, I did use a bit of WD40 on the front upper roller and the same on the rear, the front seems to turn nice and free but the rear wasnt as happy , that's fine as I'll carry on using a drop of WD40 for this roller as it's a very easy removal to do. As for the other rollers they all seem to react well to the lithium grease so I'll keep an eye on them and check on future use, I've also put a dot of white paint to see them all turning freely, these machines are kind to film but only if the rollers move freely, the upper front is often neglected and can scratch if it doesn't turn. Mark