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Review on πŸ”Œ NGK 7316 TR55-1IX Iridium IX Spark Plug, 4-Pack by David Banks

Revainrating 5 out of 5

but my crappy Ford Focus got more responsive and even smoother.

No significant improvement in fuel economy or performance, but my crappy Ford Focus is more responsive and smoother, even at idle.

Cons
  • No