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Performance & Hotrod Business - December '14

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December 2014 n Performance & Hotrod Business n 71 Summary Do not ask, "How much zinc does an oil have?" If you must know, ask which zinc in what quantity has what balance with which (and how much) detergent— or better yet, just buy oil that meets your (old car's) specs. One size does not fit all. One formula doesn't, either. You can't road race on drag slicks, you can't drag race on snow tires, and you can't use passenger car tires on a jumbo jet. Just like tires, oil is applica- tion-specific. The same oil is not suitable for newer roller cam, catalytic converter- equipped engines and older engines. Don't believe me? Forget the marketing claims and advertising of the major oil companies (and the small, secret, magic ingredi- ent "snake oil" companies). Do some research to learn more about oil from the American Petroleum Institute (API), Society of Automotive Engineers (SAE), International Lubricants Standardization and Approval Committee (ILSAC), the Society of Tribology and Lubrication Engineers, American Society for Testing and Materials (ASTM), and Petroleum Quality Institute of America (PQIA). Ed Preston is an "Old Car Specialist" at Driven Racing Oil. How Does "Zinc" Work? • Zinc Diakyldithiophosphate or Zinc Dithiophosphate • Not just one chemical, but a group of chemicals (over 50 different formulas for ZDP and ZDDP) • Polar molecule, activated by heat and load • Zinc has to compete against other additives in the oil • Sodium detergent is very active and competes against Zinc

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