Well, I thought it is done by a research institution. It was a comment written by an average Joe in the street. I would take it with a BIG grain of salt.

I do not want to get into any argument with the merit of using WVO. But WVO by nature is trash so you have to assume it has all kind of craps in there. However, reuse, reuse again oil or salt content would not denigrate it to be unusable. Water content is a killer but it can be removed easily with a diesel water separator.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.