NGK Equivalent for Motorcraft SP-596

[JimmyM]

I was looking up new plugs for my 23 Expedition Limited. The only thing I can find is the stock SP-596.
NGK (ngk.com) doesn't show any results. It also asks for VIN G or VIN T. My VIN has neither a G or a T in it.
However NGK (https://ngksparkplugs.com/en/) returns one result ILFR6M8S. But that number can't be found anywhere.

SP-596 shows a gap on .040, the ILFR6M8S one NGK site shows says .032.

What gives?

 

[Rob6805]

Why not use the Motorcraft plugs? How many miles on your 23?

 

[Alwaysthinkin]

@JimmyM Check out this post by @LokiWolf

Spark plugs

So doing some work on the Expy. Not putting plugs in until I get it tuned. Are you all running the NGK Iridiums and if so which ones? Much appreciated for the input and happy Friday.

www.expeditionforum.com

 

[JimmyM]

Only 17kmi on it right now, but was interested because a friend is replacing plugs in his EB F150. Which sort of took me down the rabbit hole

 

[JimmyM]

Thanks for the tip on the LTR7BHX. I wonder why the SP-596 are recommended at 041 vs the NGK at 031.

 

[Rob6805]

Only 17kmi on it right now, but was interested because a friend is replacing plugs in his EB F150. Which sort of took me down the rabbit hole

Don't even think about changing the plugs at ~10k miles. Go have a beer and forget about it!!

 

[JimmyM]

Wouldn't dream of it.
I was just curious given my buddy changing his at 30k and that he's going with NGK iridiums at .028

Beer sounds like a great idea.
First real maint is getting done at 50k. Trans, diffs, thans case.
'Til then, just oil changes at 5k

 

[SyndicateZ]

Stick with motorcraft oem plugs. I wouldnt change them until 60k unless u are having issues already

 

[51ChieftainDeluxe]

I just changed mine out tonight at 40k. Went with the ngk ruthenium that Loki wolf recommended. After pulling the 1st one out and looking at it I probably had another 20k or more left on them but went ahead and put the new ngks in. I will be interested in seeing the life span of these vs the factory oem.

 

[Dice Roll]

I changed mine to the ruthenium as well. Had 30k on the stockers and they had exactly zero wear. I mean none. Had started the job so went ahead with it. Thought I might find one with some wear. Nope. Not one.

I think the off idle is a tad better. At least I want it to be. lol. At least I got them from rockauto and the labor just cost me a slightly stiff leg and back.