Posted by Tom Fleming on June 05, 2010 at 02:55:22 from (206.193.253.243):
In Reply to: lawn mower oils posted by pocvalfm on June 02, 2010 at 17:37:28:
BC, you are starting to hit the edge of my current knowledge. While I can explain the physics behind surface tension, relating that directly to current specific oil composition/brands is a bit beyond me.
I do know that oils are formulated with different additives to modify tackieness, viscosity etc. depending upon their intended us. That isn't rocket science. What I don't know is all the current oil blends and what is used to create them. I would guess that would make an interesting Google search some night while you are bored and surfing.
Sorry I don't have a better answer. If you are really interested, here is a link to a journal article on the subject of surface tension and lubricity. While it doesn't specifically talk about modern motor oils, it gives you the fluid dynamics behind what I have been saying, and the principles are the same:
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