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You’re right on all your points, except the original oiling was when the bearing structure was made and the oil was “infused”(??) into the material (oil-lite bearing)where our added oil is applied to the bearing surface-spindle interface.
Really it gets down to use what works for you. I’ve also had good luck with WD-40 which isn’t ever a lubricant.
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On Aug 13, 2019, at 14:22, Richard Knoppow <email@example.com> wrote:
I am not so sure about what additives there are in engine oil. One can get good quality SAE 20 machine oil at many hardware stores. 3-in-one puts it up in a blue can (red can is something else). Also as Kano Microil, very highly refined petroleum based oil, wax free, and does not gum. Most of these blower bearings are so called "life time lubricated" meaning it works until it doesn't. They are made from sintered bronze with oil held in the spongy metal. You can't really re-lubricate them in any easy way but they will hold oil for a reasonable time.
Hewlett-Packard used blowers with a rubber seal at one end. They could be re-lubricated using a syringe to poke through the seal and inject some oil. I have no idea if the Tek blowers are similar. Unfortunately, once the bearings run dry they will become galled and run rough despite having new lubricant.
I agree with you that mixing silicon oil or grease with petroleum lubricant is not a good idea.
On 8/13/2019 2:03 PM, Chuck Harris wrote:--
Silicone oil isn't miscible with the original oil, and
you are not going to make the motor become maintenance
free, no matter what you do with oils.
Just give it some motor oil, thin like SAE5 or 10 is fine.
Detergent isn't like the stuff you wash your clothes in,
it will not cause any problems, in spite of its suggestive
The synthetic doesn't oxidize as quickly as the old oil
did, but then any modern oil is much better in that regard.
The last time anyone lubed your scope fan was likely 40
years ago and yet, it still works. Give it a couple of
drops of oil, and move on... be happy!
Stephen Hanselman wrote:
I've read some of the answers and wanted to add my two cents. We use marvel
mystery oil which seems ok so far. I was thinking about using silicon based
gun oil though