Best Spark Plug Brand?
#16
Racer
iTrader: (2)
I'll make this as easy as possible. I'll not only tell you the best option - OEM Denso iridium pre-gapped - but I'll give you a link! http://is.sewellparts.com/accessorie...2006/2056.html
I'm confused why this question keeps coming up, and even moreso why people are surprised to find the answer is OEM. Why are people looking for OEM alternatives? I've never heard of anyone installing non-OEM plugs and getting any better performance, gas mileage, etc. In fact, there was a thread in the last 2 weeks started by a CL member who went through the whole process of installing non-OEM plugs (NGK I believe), put everything back together and found the plugs were misfiring. So he not only had to buy a set of OEM plugs and was out extra money, he had to go through the entire install process again.
And given that OEM plugs are only $12.95 each on Sewell when you register with your CL username, I can't imagine aftermarket plugs offer significant savings either. These are also pre-gapped, so you don't have to deal with trying to correctly gap non-OEM plugs.
Can someone tell me why people are continually looking for alternatives to the OEM Densos? Is there any evidence that non-OEM plugs outperform them?
I'm confused why this question keeps coming up, and even moreso why people are surprised to find the answer is OEM. Why are people looking for OEM alternatives? I've never heard of anyone installing non-OEM plugs and getting any better performance, gas mileage, etc. In fact, there was a thread in the last 2 weeks started by a CL member who went through the whole process of installing non-OEM plugs (NGK I believe), put everything back together and found the plugs were misfiring. So he not only had to buy a set of OEM plugs and was out extra money, he had to go through the entire install process again.
And given that OEM plugs are only $12.95 each on Sewell when you register with your CL username, I can't imagine aftermarket plugs offer significant savings either. These are also pre-gapped, so you don't have to deal with trying to correctly gap non-OEM plugs.
Can someone tell me why people are continually looking for alternatives to the OEM Densos? Is there any evidence that non-OEM plugs outperform them?
#22
Lexus Test Driver
Thread Starter
Says in my sig, 350. So no gaskets. And Im at 90k right now and haven't changed the spark plugs. You don't have to do it at 60k cuz there is honestly no difference. I just want them changed before I hit 100k. And thanks for the Sewell link!
#24
Lexus Fanatic
iTrader: (1)
The owners manual explicitly states you need to change at 60k to maintain a portion of the vehicle warranty.
What do you know that all those engineers don't?
(we've also seen a number of folks who've changed in the 60-70k range and observed improvements in mileage and drive-ability for that matter)
Seriously, for the length of time most folks keep a car, hell twice that long, you're talking ONE extra change to actually do what he people who built the thing tell you you should do.
This is about like the folks insisting their car runs fine on 87 so they can save 20 cents.
#27
Lexus Test Driver
Thread Starter
I bought it used, and it's an '06. There's no more warranty. Gas mileage is exactly the same as the day I got it, except a little better do to my Apexi Throttle Controller on ECO Mode.
So Ill change it at 100k
So Ill change it at 100k
#28
Driver School Candidate
i dont have much of a preference but i always stick with what is in the car unless the dealer recommends it. I would hate to install something and the dealer come back and say, i have the wrong plugs, ya know
#29
Lexus Fanatic
iTrader: (1)
So yes, there is still warranty past the 60k mile change interval... at 90k as you are you're past it on miles now (but probably weren't when you got the car and failed to change the plugs as recommended)
But hey, it's your car, run em as long as you wish... just wanted to insure others were aware not only what the folks who designed the car recommend, but the fact there's additional warranty one gives up by ignoring them.
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