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Old 08-18-2013, 02:48 AM
Codifex Maximus Codifex Maximus is offline
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Join Date: Oct 2009
Location: Texas
Posts: 985
I remember quite a few years ago a viscosity demonstration at a repair shop.

There were two demonstrator devices.

One had lower viscosity thin oil like ATF. You'd turn the crank and watch the gears turn - I think there were three. The lower gear was about half in the oil and the two top gears were dry. No matter how fast you turned the crank, you couldn't get the top gears wet.

The other demonstrator had hypoid gear oil in it. It used standard and not hypoid gears though. When you turned the crank, the larger lower gear spun and picked up the thicker oil that adhered to the gear. When the larger gear meshed with the gear above, the oil transferred to it and on up to the highest gear till all were coated with oil.

Very effective demonstration of viscosity and lubrication method.
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1981 240D ChinaBlue (Got her running with a donor engine.)
1983 300DTurbo w/sunroof.
1984 300TD manual sunroof. (Electrical Gremlins)
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