With so many advancements in engine technology , engine oil has made the same , with a variety of specifications that are critical to mpg, emissions and the overall performance of a vehicle.

On this edition of Wrench Nation  we are honored to have Pennzoil oil expert Michael Thomas discuss these oil advancements and the misconceptions of engine oil service of past years, and the big differences that need to be administered with today's modern engines.

Catch Michaels podcast : Michael's Motor Alley Podcast 

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