> From: drlegendre > There are so many types, sources & grades of lubricating oil out there, > it boggles the best of minds.
Speaking of lubricating oils... I've recently been cleaning/etc some of the ~4" boxer fans that the earlier PDP-11's use in large quantities. Some of the IMC fans (sleeve bearing) in the machine didn't really want to turn; on taking them apart, they were absolutely full of dirt, and when cleaned, spun up nicely. However.. what lubricant should I use on them before putting them back together for the long term? I assume I should use _something_? But the machine's going to be sitting a fair amount, so I don't want something that will dry out and/or gum up. What do people recommend? Would a 20SAE oil, as used on small electric motors, be OK, or is that in danger of turning into gummy stuff if left sitting for too long? Is there e.g. some silione-based stuff which is long-term capable? Thanks in advance for any/all advice! Noel