ierave Posted May 26, 2011 Report Share Posted May 26, 2011 2 of my 4 spark plugs need to be changed on urgent basis but the other 2 are good to go for next minimum 6 mths ( the previous owner only got 2 spark plugs changed) now do i change all 4 of them or the urgent 2 these are a higher grade of spark plugs and i am confused what should i do Link to comment Share on other sites More sharing options...
abdullad Posted May 28, 2011 Report Share Posted May 28, 2011 Change all 4 for best performance and saving hassle and labor cost to change other 2 after few months. Link to comment Share on other sites More sharing options...
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