Spark plug testing. AC Delco Iridium/Platinum New VS 150k miles run mostly on 93 Octane and E85

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  • Опубликовано: 13 сен 2024
  • We test a new AC Delco iridium and platinum spark plug vs 4 old ones with over 150k miles on them. 9000 rpm down to 200 rpm.

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