There is NO free lunch, period. Some members love WVO, some loath it so take your pick. Treat it as a hobby, life style, feel good, green energy and you will enjoy doing it. If you cut it with diesel ( 50/50 ) or gas ( 20/80 ) then there is no modification or little modification to the car. I think these old diesel runs better and quieter with WVO or blend. The bottom line is filtering and de-water the WVO the best you can. I do not think the type of oil from restaurant makes any difference IMHO.

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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.