Review on π₯ Denso (DK20PR-D13) Iridium Spark Plug: Ignite Performance with Superior Quality by Dennis Goozmer
Pays off in fuel savings
The previous owner of my Honda CR-Z bought cheap spark plugs at half the price of these . The old spark plugs weren't badly worn, but once fitted, average fuel economy went up from 36.5 to 38.4mpg. I would definitely buy what the manual says as the gas savings makes up for the difference in price.
- Refined aluminum oxide powder insulator: offers exceptional dielectric strength and thermal conductivity, allowing the material to withstand extreme stress
- Not bad, but...
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