Best spark plug?
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#9
MGD,
Are the Iridiums worth the extra money? They are supposed to be lifetime plugs, aren't they?
And for the other two responses,
Are the SP-515s worth the spark on my lil 2v 4.6? I know they recommended them for the 5.4, but they are two piece and I'm a little leery of that, even though I know my engine doesn't have the plug issues the 5.4 suffered....
Are the Iridiums worth the extra money? They are supposed to be lifetime plugs, aren't they?
And for the other two responses,
Are the SP-515s worth the spark on my lil 2v 4.6? I know they recommended them for the 5.4, but they are two piece and I'm a little leery of that, even though I know my engine doesn't have the plug issues the 5.4 suffered....
#12
MGD,
Are the Iridiums worth the extra money? They are supposed to be lifetime plugs, aren't they?
And for the other two responses,
Are the SP-515s worth the spark on my lil 2v 4.6? I know they recommended them for the 5.4, but they are two piece and I'm a little leery of that, even though I know my engine doesn't have the plug issues the 5.4 suffered....
Are the Iridiums worth the extra money? They are supposed to be lifetime plugs, aren't they?
And for the other two responses,
Are the SP-515s worth the spark on my lil 2v 4.6? I know they recommended them for the 5.4, but they are two piece and I'm a little leery of that, even though I know my engine doesn't have the plug issues the 5.4 suffered....
You'll be just fine with the single-plat SP-493 Motorcraft. The iridium plug is pricey and you'll likely never know the difference in a stock truck. I was just answering yer question, lol. Save yer coin.
Remember - 28 ft-lbs , dry. Use dielectric properly in the boots.
Good luck!
MGD
#13
#14
Ah no- I just went to Oreily and they gave me Motorcraft SP-415 for my 04 5.4L (non-heritage). But what y'all are saying is I need SP-515? Man, this is annoying because I gave them all my info including VIN per their request. Oh well. C'est la vie.
Last edited by gcwaterski; 04-25-2012 at 01:21 PM.