As posted by another already...the pfr5b-11 are the same plugs as factory except 1 step hotter. They are a superior plug to the ones you just bought. The step hotter is presumably because the car is old and compression is assumed to be quite a bit lower than it was new--probably a correct assumption. Those plugs will stay clean at idle on the old engine. I'd leave them in and return the plugs you just bought. They are rated for 100,000 miles before needing a change.
Quote:
Originally Posted by canbritsvx
Hi all quick question, i when to a local auto parts and picked up plugs for the new car, all new vehicles i get the first thing i do is change oil and plugs.
The ones he sold me were NGK G-Power BKR6EGP , i went to change them last night and the ones in the car look new , but they are PFR5B11 , and so i checked SVX.net and the suggested plug is PFR6B-11 .
Is the 5B ok, are the BKR6EGP ok to keep and use, should i get 6B-11's
Thanks
C
|