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More Great Links
- Canitz, David. Royal Purple Technical Services Manager. Personal Interview. Conducted on Feb. 6, 2009.
- CarBibles.com. "The Engine Oil Bible." (April 27, 2010)http://www.carbibles.com/engineoil_bible.html
- Chinn, Kevin. ExxonMobil Lubricants and Specialties, Global Flagship PVL Technical Advisor. Personal Interview. Conducted on Feb. 11, 2009.