2017 Indianapolis 500 – Thursday, May 18 – Update – 2 p.m.

By Steve Wittich The fourth day of practice for the 101st Indianapolis 500 presented by PennGrade Motor Oil began promptly at noon under mainly sunny skies. According to the Firestone Racing engineers the ambient temperature when the six hour practice session began was 83F and the track temperature was 105F. After a slow Wednesday, the…

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