Sparkplugs on a 2010 tundra 5.7

Hey Tundra owners.
Just finished changing my plugs to my 2010 tundra. 5.7
1st change was at 100,000.
My truck now has 233,034.
This is only my 2nd change.
I put 130,000 miles on these plugs.
Here's a picture of one of the plugs. All 8 looked this way. Was I surprised. They say u should change them every 30,000 and now I know why. The last ones on both right and left of engine where really hard to remove. So tight I thought they either stripped or the bonded to head but was able to remove them .
What I need to get is a long handle rachet.
I won't wait another 100,000 to change them.
Why did I wait so long?
Truck runs good.
Will I change them sooner.
Maybe


NGKs

 

That plug doesn't look horrible for 130,000 miles.

I think Mama Toyota suggests 100 - 120,000 miles for iridium plugs. 30,000 miles change interval for iridium? Mmmmm.....

I changed mine for the first time at 65,000 miles (wanted to see how they were looking) and they looked great. I'll do 80k+ this time.

 

Original plugs from my 2008 @97k miles.

 

Looks fine. 120k mile plugs. I replaced twice… at 100k and then 200k, and they essentially looked identical to yours.

Any of the iridium plugs today have an anti-seize coating on the threads. They will feel snug, but shouldn't seize.

Complete waste to replace iridiums at 30k.

 

I had read it somewhere about 30,000.
I thought that doesn't seem right.
Anyway I'm planning to get 300,000
maybe more out of this truck.
Been a good truck.
One money light in 12 years and I fixed that. Spent sometime on my 4 x 4 low. Took care of that also.

A friend just bought a new tundra. Waiting to see it.

 

Copper plugs on the rare v6 (and 1GR on the taco and 4R) are 30k. Was surprised to find my 4R unchanged at 130k. Other than a larger than accepted gap on those copper plugs, there was no noticeable problems or benefits. Thanks Toyota engineering.

 

As long as you’re using Iridium plugs, 120k should be fine.

 

Yeah OP I don't see anything wrong with those plugs. I say you can easily go 100k miles on good quality plugs. 30k changing is for ADD folks.

 

Can anyone recommend some good, long-lasting plugs? I'm coming up on 200k miles and looking to change them out. TIA.

 

OEM Iridium plugs.....

 

Denso Iridium, stay OEM.

 

Yep. Stay original. Buy from a trusted source. Denso's website has a list of their factory authorized retailers.

Here are my original Mama Toyota Densos at 69,600 miles.

 

Man cmon look it up.. Get Iridium Denso's or NGK's from a reputable seller and you'll be good.. but make sure you are getting them from reputable seller.. cause they are knockoff sparkplugs. U certainly dont want that..

 

Just don’t order them off Amazon. One of the members from my Yukon forum got fakes from Rock Auto a few years ago. He posted the pic’s of the iridium tabs missing. He said they did replace them. They are supposed to come pre-gapped, but make sure you double check anyway.

 

I think Denso has a verification code you can check onsite for the iridium plugs, at least that's how I remember it a few years ago.