24K plugs
Decided to pull the spark plugs after haven been in for 24K. This is in a 1994 Fleetwood Southwind Storm 28ft 454 w/4L80E Surprisingly they looked very good after 24k miles.... https://www.irv2....
Forum Discussion
theoldwizard1 wrote:
24K is nothing for spark plugs these days ! I'll bet the recommended interval is 100K.
Those don't look like AC Delco that came out of them.
Recommended interval of 100K applies to Iridium equipped vehicles. These are standard copper plugs (94 GM 454 TBI)
These types of plugs are designed with today's ignition equipped systems combined with high CR and lean cruise AFR ratios.
One other note...
All spark plugs (Iridium) are copper at their cores. What differ is the tip. A standard copper core has a copper tip coated with nickel.
