question about NGK spark plugs

913 Views 7 Replies 7 Participants Last post by Roger, May 14, 2002

OhMyGodItsDanny

Discussion Starter · May 9, 2002

what's the difference between PFR6G-11 and PFR5G-11? PFR5G-11 is for normal driving condition and PFR6G-11 is for harder driving. SO what's the draw back/advantage of having a PFR6G-11 over the PFR5G-11? I have a couple of mods so should I go with PFR6G-11? look at my sig for the mods I have and let me know which plugs should i get.

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claus44

· #6 · May 10, 2002

stick with stock "normal" heat range.

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