Best S. Plugs?
Hotshot
Joined: Dec 2003
Posts: 18,423
Likes: 9
From: iowa
The only time I have ever tried the Plat +4s was in my wifes 97 F150 with a 4.6, decided to change plugs at 68,000 miles fuel economy went from 16-18 to 12-14 changed back to autolite platimums mileage went up to 17-19 immediatly. Won't ever have those POS plugs in any vehicle I own ever again. They are a gimmick designed to lighten your wallet as quickly as possible and with this design in mind they do a great job, but still snake oil type of thing.
Postmaster
Joined: Jan 2003
Posts: 4,417
Likes: 3
From: Durham, NC
Originally Posted by Madmike33
Sorry to hear about your misfire, but my truck has run bosch platinum 4, 8 years out of 15 with no problem, runs great and strong. Misfires can happen with any type of plug, even factory, it happens. You're right though certain vehicles agree more with different type plugs... but as to which is better it'll always be ones opinion vs. another.
Madmike33
Madmike33
Elder User
Joined: Apr 2004
Posts: 748
Likes: 0
From: North US Border, Canada
Originally Posted by Bob Ayers
Maybe you should try Motorcraft plugs to see what a Ford really runs like?
On a side note, my dad still has his original Motorcraft plugs in his 98 F150 STX with 217000 KM. His truck still runs smooth and solid. I'm not saying this is right and I have told him more than once that this isn't smart. He knows better being an ex mechanic. Now I'm the mechanic and do all the work on his vehicles, I also told him I would do everything except his plugs..LOL! I'm curious to see what they look like though.
Madmike33
Last edited by Madmike33; Feb 19, 2007 at 10:37 AM.
Posting Guru
Joined: Jun 2003
Posts: 1,777
Likes: 1
From: Perry,Ga.
Just changed the plugs in the 01 Focus yesterday and what a BIG differance!!I was low on cash and put copper core plugs in it 14000 miles ago and the gas mileage started to go south with about 10000 miles on them and for the last week it had a dead skip at idol.I put in the double platinum autolite plugs, miss was going and no more losing speed going up hill. I will have to let you know on the gas mileage later. The plugs I took out look good and no increase in the gap just a light brown color on the insulators. I hope to get at least 60000 on the new ones.I have 63500 miles on the double platinum plugs in the 96 Ranger and it still runs great with an average 20 MPG on the road.
Last edited by GrayRanger4x4; Feb 19, 2007 at 03:59 PM.
