Best spark plugs?

[jblc]

If replacing spark plugs, are OEM the best, or aftermarket?
Eg Motorcraft SP578 Iridium.

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[Sharky]

MOTORCRAFT

 

[Trigganometry]

Curious why you’re replacing the plugs. You have that many miles already?

 

[jblc]

Curious why you’re replacing the plugs. You have that many miles already?

No, very few miles. But I always like to carry a spare set in the vehicle as part of the repair kit for road trips, etc

 

[Trigganometry]

No, very few miles. But I always like to carry a spare set in the vehicle as part of the repair kit for road trips, etc

Not saying a plug could crack or some weird defect but a coil pack is a better spare part to have on hand. They seem to be problematic for some on here one time or another.

 

[jblc]

Not saying a plug could crack or some weird defect but a coil pack is a better spare part to have on hand. They seem to be problematic for some on here one time or another.

Yep, that is also part of the kit

 

[Langwilliams]

I plan on changing mine at 30K since I run a tune. I've read other places ecoboost motors eat plugs

 

[Dgc333]

I plan on changing mine at 30K since I run a tune. I've read other places ecoboost motors eat plugs

I have driven 2.3 Ecoboost Mustangs for the past 6 years and almost 100k miles. The only folks that I have heard having short life on plugs are those that think they need to be running a colder heat range plug.

 

[rcairflr]

I call roadside assistance....

but thats just me

That is just ridiculous. You should carry spare parts for "anything" that could possibly go wrong.

 

[Langwilliams]

I have driven 2.3 Ecoboost Mustangs for the past 6 years and almost 100k miles. The only folks that I have heard having short life on plugs are those that think they need to be running a colder heat range plug.

From what I've read most tuners suggest a one ranger cooler sparkplug per 75-100 HP added. Based on that I don't think I need to change the heat range. I figure my Livernois tune adds around 50 HP so no need for a different plug but the extra heat shortens plug life. I'll go with the Motorcraft plugs so that's cheap insurance.

 

[Msfitoy]

OEM...replaced mine at 50K out of habit but the set looked perfectly good...saved those for another life and installed new plugs...now at 80K and no sign of wear or hiccup...?

 

[Langwilliams]

OEM...replaced mine at 50K out of habit but the set looked perfectly good...saved those for another life and installed new plugs...now at 80K and no sign of wear or hiccup...?

Is your truck tuned?

 

[Msfitoy]

Is your truck tuned?

No it is not...just plumbing upgrades...

 

[Langwilliams]

No it is not...just plumbing upgrades...

OK maybe that's why your plugs looked good at 50K. Plus powering all those lights you added probably help burn off carbon

 

[Radioman]

you're right.
I'm going to get a trailer to carry my extra front differential, extra CV joints, left and right. A new full driveshaft with center bearing. new Turbo, Battery and a transmission. I'll also get an engine stuffed in there in case the fuel/oil thing gets out of hand.
never know.

Don't forget the spare tailgate dampener.

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