Tuesday, June 9, 2015

Automotive Machine Shop

Taking it to the Streets
Part 4 of 4
Street performance oils are a subcategory within racing oils that are formulated for the typical vintage muscle car or street/strip machine. Some of these oils are not API-rated, although they usually meet all of the other performance criteria for a modern motor oil. The main difference is that they contain 1200 PPM or more ZDDP to protect flat tappet cams and lifters against premature wear. Since most of these vehicles are not equipped with oxygen sensors or catalytic converters, phosphorus contamination is not an issue. Such products are usually NOT recommended for late model vehicles that have electronic engine controls (O2 sensors) and catalytic converters.
For more demanding racing applications, specially formulated racing oils with the highest quality synthetic base stocks may be required to provide the utmost protection and lubrication. Some racing oils are formulated for engines that are running alcohol, or for blown, turbocharged or nitrous applications. The best advice here is to follow the application recommendations of the oil supplier. They know their individual additive packages and formulations and can help you choose a product that is right for the application.

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