This is funny, I've heard of WVO and SVO, but supposedly Waste Vegetable Oil also goes by (W.Va.) and Straight Vegetable Oil goes by (SO), well, in the first few paragraphs, I see they fixed it further into the article. Waste Vegetable Oil and West Virginia have something in common!

http://site.aol.com/autos/article/3.adp

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.