Mindspin311 Posted February 13, 2011 Share Posted February 13, 2011 So I have right at 20k on my plugs, they were put in at the same time I was tuned. How long can I expect them to last? I cant imagine the 60k interval would apply. Link to comment Share on other sites More sharing options...
mwiener2 Posted February 13, 2011 Share Posted February 13, 2011 If they are the proper plugs, they should last till almost 60k My Mods List (Updated 8/22/17) 2005 Outback FMT Running on Electrons Link to comment Share on other sites More sharing options...
Mindspin311 Posted February 13, 2011 Author Share Posted February 13, 2011 If they are the proper plugs, they should last till almost 60k OEM plugs from my local Subaru parts department.. Link to comment Share on other sites More sharing options...
KartRacerBoy Posted February 13, 2011 Share Posted February 13, 2011 Stg 2 since 15k miles and changed the still original plugs at 80k. They were still perfect. But I drive like a grandma 95% of the time. Link to comment Share on other sites More sharing options...
SCGT Posted February 13, 2011 Share Posted February 13, 2011 I change mine every ~20k, but I tend to be a little conservative in maintenance. I use NGK 1 step colder. Link to comment Share on other sites More sharing options...
Stock_Sucks Posted February 14, 2011 Share Posted February 14, 2011 all the way till they need changed, or wear out. whichever comes first. haha jokes. if your not sure change em. If you take them out to check them, change them. they are a bit more challenging to get out than some, so change em while they are out. this reminds me, I should change mine Link to comment Share on other sites More sharing options...
robinlsb Posted February 14, 2011 Share Posted February 14, 2011 I change mine every ~20k, but I tend to be a little conservative in maintenance. I use NGK 1 step colder. 30k, stock heat range. "Belief does not make truth. Evidence makes truth. And belief does not make evidence." Link to comment Share on other sites More sharing options...
Boostin1657615274 Posted February 15, 2011 Share Posted February 15, 2011 Don't expect stock maintainence intervals on a modified engine, especially if you went with a colder plug. The only way to tell if they need to be changed is to pull them out and measure the wear. That's a pain in the ass on a boxer though. On the search for a new DD... Link to comment Share on other sites More sharing options...
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