how come at the dealers the platnum spark plugs cost more than the iridiums

 

get them at a parts store, try "import auto parts" # is (303) 443-4763 (it is the boulder store but there is one down south in denver) they should be quite a bit cheaper, or get the part number and try a honda dealer

 

are they still getting 25 each?
oreilly/kragen has them for under 10 each NGK Iridium

I know that advances in mining technology made iridium more available at reasonable cost, before they used it on airplane and race car plugs

I think the surge in Platinum as wedding rings and other jewelry may be taking away from our use of it--raising the price

Irid's are proven better plug, is stock on gen3 and good for our gen2s

 

I just picked up NGK Iridium's at Advance Auto for $6.99ea the other day

 

The oem platinum is more expensive compare to ngk ix. If you buy it from store, it is between 10-15 bucks. It is rated 100k compare to ngk ix which is 60k, but I believe ngk ix has a little more power.

 

Im on IX and plan to replace at 50-60kmiles of use,,thats a ways from now-
they are supposed to be racier~ or is that riceier

 

who keeps there plugs in for 60-100k? I do mine ever 20k miles regardless if there "still good" the porcelin there made out of will eventuall break down, not to mention good luck on taking out that 100k miles spark plug that just broke off on the back side of the engine

 

so true about getting them out at 100k, but normally they are extremely sticky coming out at that mileage (resistence all the way out), but i know some new cars are recommending doing them for the first time at 120k, really good luck at getting those suckers out

 

no need for new plugs every 20 on the TL if using the correct plug-
technology has come a long way

Use anti sieze on plug threads to make removal and install much easier

 

I dont care how "technology" will keep the plug going for 6,000,000 miles. . . ceramic will break after a given point. . . are you that cheap you cant afford $60.00 a year to do plugs? you must be that guy who changes his oil every 20,000 miles because it says you can

 

no one who changed their plugs at 60 has found broken ceramics or it would be all over this forum

Did you have a bad experience with these NGKs failing? or some other plug?

my baby only gets 15kmiles a year, 91 chevron or shell gas, with 3 oil changes and seafoam in that time...
Plus its tricked out nicely on the suspension and brakes

I just cant see the need for plugs that often and I work with race cars!
but to each his own- change yours every 6 months if you want to

How is your actual gas mileage ? are fresh plugs giving you 2-3mpg over the rest of us?

 

I still have yet to pin point a mpg on the car, ive only owned it for about 2 months id say im getting about 300miles to the tank of normal driving, I think thats bad but I just came from a 4cyl civic si that got about 26mpg

 

Iridium's are stock on the 2g CL. i would've thought the 2g TL would be the same

 

that is about exactly what i get per tank (i am normally about 290-300), and i do not run the tank down to the light every time, it normally has about an 1/8 left or so, i get about 22-23 mpg, and i will floor it getting onto the highway, so no little granny driving it
about the plugs being changed at 20k it is a little often, but each there own, but it is not like these engines are very hard on the plugs so it is kinda unncessary, a better mileage would be about 60K or so, with you being picky about it
also you talk about the ceramic breaking, only time i have seen that is geneally when you accidently tilt the socket a little too much, and crack it then, so it be installation error then
or you are tring to remove the plug wire or something and it crack thens, but that is still installer error

and they are the same as alot of the K series motors, also i know Type-S or not matters too in what plugs it gets

 

good point. i forgot about that

 

thin did you get sum yet? i got mine from autozone they were like $7 each.

 

I just changed mine for the first time at 108K. They were pretty damn tight, so it was tough to break them loose, but they came out with no problem after the first couple of revolutions. I put some anti-seize on the new plugs, so hopefully they will come out easier in another 100K miles.

On my old plugs, I was getting an average of around 24 mpg with mixed "city" and highway driving (40% city, 60% hwy). On all highway, I was getting around 30-31. I expect the same or better from the new plugs.

I'll post pics later to show how they looked after 108K miles. Way too big of a pain in the ass (at least that back left one) to change them every 20K miles. The way I look at it, every time you change them you add the risk of doing something stupid, like breaking the plug off, having the socket come off on the plug, etc. And by "you", I mean "me"!

 

try with the new ones on some vehicles, needing the first time at 120k, those are going to be a pain in the ass to remove, but good job with the anti-sieze, they will come out ALOT easier next time

they will proably look wasted and have a huge gap. and you call our cars a big pain in the ass, you should try an odyssey (cowl/wipers are half way over the engine),
even those are not that bad
on v-6 chevy blazer's you actually got to loosen the steering column up to move it out of the way to even attempt to get at the #4 sparkplug
or even try subarus with dohc motors (especially the h6 motor) you gotta jack up that side of the motor to even get access to them (framerails are in the way)

 

Just replaced my plugs with NGK Iridiums, the factory plugs were showing some minor wear at 54K. Good thing I check them, as the one of the plugs were loose & had residue around the base, as it may not have been installed correctly or have loosened up some over time.

Since the new plugs were installed, I have noticed improved throttle response. If you change your plugs, be sure to check that the vaccum line attaching to the rear of the intake does not come off. I started my car & drove it a few miles, when I noticed a slight vibration at idle while in drive which wasn't present before the plug change.

Upon further inspection, I noticed that the vaccum line attached to the rear of the intake had fallen off. Once I reattached the line, the idle was smooth once again!

FYI

 

Ceramic will break? From what?