Changed spark plugs at 97K

I have had sparkplugs that looked far worse.

 

i hope it isn't the pistons/rings/ egr, that is unusual

 

yeah, you could have gone the usual 120k no problem

 

I swapped mine at the same mileage. They looked almost identical to these. Nothing to worry about.

 

which plugs did you put in?

 

Careful of fakes/scams plugs from ebay. The plugs may work a first, but may not be made of iridium.
Fake eBay spark plugs - ClubLexus - Lexus Forum Discussion

I bought mine from RockAuto and I hope I didn't get fakes.

 

Denso has provided 20 pages of stuff you can check if you want to be more sure.

 

Fake Chinese knockoffs, it looks like.

Hope I'm wrong, but the price suggests otherwise.

It's not just fleabay.
Amazon has a biiiiig problem with fakery too.

Given how hard they are to get to and how long they (are SUPPOSED to) last this is one of the few times that I would go with dealer stock or one of the big suppliers.

YMMV

 

that white one is the only one that looks scary. head gasket scary

 

I skipped those problems and bought Bosch...

 

so you’re saying Bosch plugs guarantees that plugs will stay original color under the same oci?

 

No, counterfeit problems.......
On the 2nd set. When I pulled the 1st set out I couldn't tell if there was any wear.
They all get discolored from the heat. But nothing abnormal.

 

Yeah, what kind of loser would ever counterfeit Bosch?

 

so they’re not original, but just like original

 

your reply was after post #13 and didn’t quote anyone so I believed you replied to post #13