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"3in1?"
No!
"Marvel Mystery?"
No, no!
"WD-40?"
NO, NO, NO!! (I added that just for fun.)
"...plain old 10-30?"
Maybe.
I used a lightweight motor oil -- somewhere I got a quart of this stuff. I'd say it's about 2 weight. 10-30 might be too heavy, and you really don't want the additives and viscosity stablizers in the electric motor bushings.
I'm sure you can find a decent oil at the hardware store.
Search the archives and FAQs -- someone posted a method to inject oil to the motor bushings from outside, with minimal disassembly. The real problem here is that Volvo started construction of your car by magically suspending the blower in mid-air and then building the car around it.
"Is there an oil reservoir that I've been over-looking...?"
Not really. If you disassemble the motor you'll see that the bushings are surrounded by felt thingies that hold extra oil. The bushings themselves are probably sintered -- that is, they're made of molded, pressed, and bonded metal particles, so they have microscopic pores to hold and deliver oil to the wearing surface.
"...just put a couple of drops where the shaft goes into the bushing?"
That's about it, although I think the bushing and felt thingies absorb more like a half teaspoon of oil.
Avoid over-oiling -- you don't want oil on the brushes or commutator.
"...PBlaster as a solvent..."
Sounds good. I usually use carb cleaner. Cheap, effective, not overly poisonous. Aim carefully, use sparingly.
--
Don Foster (near Cape Cod, MA)
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