View Poll Results: How long do EVO stock spark plugs last?
1-10,000
8
26.67%
10,001-20,000
1
3.33%
20,001-30,000
8
26.67%
30,001-40,000
7
23.33%
40,001-50,000
4
13.33%
50,001-60,000
2
6.67%
Voters: 30. You may not vote on this poll
How long do EVO stock spark plugs last?
Feb 17, 2006, 05:01 PM
#4
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There are to many varialbes answer your poll correctly. One variable is the type of plug you are running. If you are running Copper plugs then I suggest you change them every 2 oil changes or so. If you have better plugs like Iridiums its going to come down to your mods and your tune on the car. Way to many varialbles!!
Feb 18, 2006, 02:12 PM
#6
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Originally Posted by use2vtec
There are to many varialbes answer your poll correctly. One variable is the type of plug you are running. If you are running Copper plugs then I suggest you change them every 2 oil changes or so. If you have better plugs like Iridiums its going to come down to your mods and your tune on the car. Way to many varialbles!!
This question is not designed to be a valid scientific experiment. To do so you would have to do many restrictions to the experiment. Besides, one person's definition of a spent plug may not agree wtih another's. Irridium plugs do not generally have the electrode degradation that the copper ones do. In other words the physical warning signs are not there like they are with copper plugs.
The purpose of this poll was to get a general feel about when to change plugs. The manual says 60K. Some might think 10K, etc. without really needing to change the plug other than to make them feel better.
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Feb 18, 2006, 04:22 PM
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My service and warranty manual calls for changing them at 30,000 so thats when I did mine but they were still good at that time. I'm sure they could have gone longer but you can get a set of NGK Iridiums on ebay for $25 a set so it wasnt a big deal.
Feb 18, 2006, 04:37 PM
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Stockers last differently depending on mods you have done, and if the car is tuned or not. I personally switched over to coppers and change them at every oil change.
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