Originally Posted By: SteveSRT8
WE have routinely gone well beyond factory limits in our fleet without misfire or codes. And the plugs still come right out, don't fall for the line that they automatically cannot be removed.
+1 to this. My first spark plug change in an aluminum head was with a 1997 Cadillac Seville, with over 140,000 miles on the original plugs. They came right out, no thread issues, no installation issues. A few months ago, I replaced the spark plugs in our 2005 Acura MDX with the same miles as what's on your Elantra, with no removal or installation issues.