blaze Posted November 11, 2007 Share Posted November 11, 2007 Dealer gave me PFR6B-11 NGK, MY BOOK CALLS FOR PFR5B-11? Has there been a change to use this colder plug? Or did the Dealer mess up? 98 Outback 2.5, just rebuilt last night with Brand New Short Block. Link to comment Share on other sites More sharing options...
Legacy777 Posted November 12, 2007 Share Posted November 12, 2007 blaze said: Dealer gave me PFR6B-11 NGK, MY BOOK CALLS FOR PFR5B-11? Has there been a change to use this colder plug? Or did the Dealer mess up? 98 Outback 2.5, just rebuilt last night with Brand New Short Block. I'd call the dealer back and ask. NGK's website also says to use the "5" heat range. Link to comment Share on other sites More sharing options...
newsoobdude Posted November 13, 2007 Share Posted November 13, 2007 From what my limited memory remembers, I think it's better to go with a HOTTER plug, just one step up though. Something about running rich and all that fun. Check sl-i.net for more. Link to comment Share on other sites More sharing options...
montana105 Posted November 13, 2007 Share Posted November 13, 2007 Where is the new block from? I would go with what they say in order to maintain your warranty,if no warranty is lingering go with the next heat range up,you'll love it Link to comment Share on other sites More sharing options...
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