On Friday 25 January 2008, Jon Elson wrote: >Gene Heskett wrote: >> Yeah, I drove out to them today and got a quote, $84 and change for a 5 >> gallon pail. That's a several lifetimes supply at my age. So I left it >> in their warehouse & stopped at Wallies and got a quart of 5w20 100% >> synthetic. No idea if its any good or not, if not there is always MSC and >> Granger. I haven't checked to see if any of my local pro's might have >> pail, which I'll do first of the week, the next 48 hours is spoken for. > >That is NOT way oil, and is designed for an entirely different >application. Engine oils are for hydrodynamic bearings, where >the spinning journal provides the shearing force that floats it. > >The ways of a machine tool move MUCH too slowly to produce this >force, so they depend on an intricate balance of viscosity and >surface area. All the machine tool dealers carry some brand of >way oil in 1 Gal. bottles. The oil for a Bridgeport should be >ISO VG (viscosity grade) 68, which is approximately SAE 20. >but, if you FEEL the way oil, you will immediately see there is >something different, it is a LOT "stickier" that engine oils, >and will remind you of a gear oil. That is what keeps it in >place on the ways, where the SAE 20 will film off and end up on >the floor overnight, the way oil will take a MONTH to get there. > >Jon > That is exactly what I was afraid of Jon. Hydrodynamic oils aren't really all that good a lubricant, and anyone who has looked at a camshaft with 50,000 miles on it can readily see. I just grabbed a nightly build of firefox that might fix my problems when trying to order online.
Thanks for confirming the thought that was running in the back of my mind all the way home. >------------------------------------------------------------------------- >This SF.net email is sponsored by: Microsoft >Defy all challenges. Microsoft(R) Visual Studio 2008. >http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ >_______________________________________________ >Emc-users mailing list >[email protected] >https://lists.sourceforge.net/lists/listinfo/emc-users -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) A wise man can see more from the bottom of a well than a fool can from a mountain top. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
