Iridium or platinum plugs for cold climate?

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Old 31 Oct 2006, 02:31 pm   #1 (permalink)
aqlumen@gmail.com
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Default Iridium or platinum plugs for cold climate?

Currently I have NGK BKR6EKPB-11 plugs in my 1999 Camry--these are OEM.
I
live northern Maine where temperatures typically drop below zero during
winter. Would NGK Iridium plugs (BKR6EIX-11) help for cold starting and
gas mileage? Or should I stick with the OEM platinum plugs?

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Old 31 Oct 2006, 03:43 pm   #2 (permalink)
Stubby
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Default Re: Iridium or platinum plugs for cold climate?

aqlumen@gmail.com wrote:
> Currently I have NGK BKR6EKPB-11 plugs in my 1999 Camry--these are OEM.
> I
> live northern Maine where temperatures typically drop below zero during
> winter. Would NGK Iridium plugs (BKR6EIX-11) help for cold starting and
> gas mileage? Or should I stick with the OEM platinum plugs?
>

This is a non-issue. I have never changed my plugs in my '95 Camry.
156,000 miles. Starts fine, gets 24-29 mpg.
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Old 31 Oct 2006, 03:56 pm   #3 (permalink)
aqlumen@gmail.com
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Default Re: Iridium or platinum plugs for cold climate?


Stubby wrote:
> aqlumen@gmail.com wrote:
> > Currently I have NGK BKR6EKPB-11 plugs in my 1999 Camry--these are OEM.
> > I
> > live northern Maine where temperatures typically drop below zero during
> > winter. Would NGK Iridium plugs (BKR6EIX-11) help for cold starting and
> > gas mileage? Or should I stick with the OEM platinum plugs?
> >

> This is a non-issue. I have never changed my plugs in my '95 Camry.
> 156,000 miles. Starts fine, gets 24-29 mpg.


Perhaps, but do you live in a very cold climate? Trust me, the winters
here test even the best ignition systems.

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Old 31 Oct 2006, 04:45 pm   #4 (permalink)
m Ransley
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Default Re: Iridium or platinum plugs for cold climate?

Different type plugs wont make a difference, replacing old plugs will,
I see a noticeable difference on 40000+ miles when I change them. Best
is be sure your thermostat is good

Stubby if you changed yours and checked your timing I bet youd be
getting 28-33, I get 28-36.

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Old 31 Oct 2006, 08:36 pm   #5 (permalink)
Daniel
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Default Re: Iridium or platinum plugs for cold climate?


Stubby wrote:
> I have never changed my plugs in my '95 Camry.

=============
If you ever do change the plugs, you need to be careful the threads in
the aluminum head don't come out with them - perhaps a good
penetrating oil like Kroil would be in order.
Platinum plugs are very durable. At sixty thousand miles the gap on
mine was still just fine. Changed them because the schedule calls for
it.
Re: Iridium the primary difference is longevity - scheduled
replacement is 90,000 miles versus 60,000. Other than that, unlikely
you would see any difference.
For extreme cold you will see a significant difference with fully
synthetic motor oil.

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Old 31 Oct 2006, 09:10 pm   #6 (permalink)
aqlumen@gmail.com
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Default Re: Iridium or platinum plugs for cold climate?


m Ransley wrote:
> Different type plugs wont make a difference, replacing old plugs will,
> I see a noticeable difference on 40000+ miles when I change them. Best
> is be sure your thermostat is good
>
> Stubby if you changed yours and checked your timing I bet youd be
> getting 28-33, I get 28-36.


I decided to contact NGK on this. Here's their response and I believe
it to be accurate.

------------------------------------------------

Hello,

BKR6EIX-11 is a plug designed for improved performance and
ignitability.
Because of the plug's fine wire center firing electrode, it should help
fire the engine easier in cold start situations. Because of the design
of the plug you may also see improved efficiency and performance. The
Iridium IX plug would however, require more frequent replacement than
the OE BKR6EKPB-11 which is a multiple ground electrode platinum plug.
The multiple ground electrodes will allow the plug to wear more evenly,
prolonging service intervals.

Kristopher Zdral
Technical Support Representative
NGK Spark Plugs (U.S.A.), INC.

-----Original Message-----
From: aqlumen@gmail.com [mailto:aqlumen@gmail.com]
Sent: Tuesday, October 31, 2006 3:26 PM
To: Info
Subject: NGK Form Mail

**** Contact Form & Tech Info Feedback ****

Email From: aqlumen@gmail.com
VehicleType: Car
Make: Toyota
Model: Camry
Year: 1999
Engine Type: 4 cyl, DOHC
Comments: Currently I have NGK BKR6EKPB-11 plugs in my Camry--these are
OEM. I live northern Maine where temperatures typically drop below zero
during winter. Would NGK Iridium plugs (BKR6EIX-11) help for cold
starting and gas mileage? Or should I stick with the OEM platinum
plugs?
When: 10/31/2006 3:26:16 PM

END OF REPORT

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Old 01 Nov 2006, 07:08 pm   #7 (permalink)
johngdole@hotmail.com
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Default Re: Iridium or platinum plugs for cold climate?

The Laser Iridium from NGK is a more durable version of the Iridium IX
.. The Laser Iridum has a thicker center electrode and a platinum pad on
the ground electrode. This plug is spec'ed for 120K mile service in
newer Toyotas.

Iridiums are superior to traditional platinums in that they can fire
very lean mixtures (up to 18:1), have reduced firing voltage
requirement and are better in self cleaning. I've used them exclusively
on all the cars I install and many times they are cheaper than platinum
plugs (www.rockauto.com).

NGK platinum plugs are also good and in my experience show little wear
(on the other hand Densos look like crap after 60K miles). But plug
performances do degrade, probably from internal material changes with
use. That's why like to replace them using Iridiums at 30K mile
intervals.

A while ago an owner talked about good experience (for 5000 miles since
install) with Bosch Platinum Plus-2 plugs. I think I'll give these a
try next time. The x2 are about 1/2 the cost of Iridiums but with
similarly thin center electrode. And Bosch has a new Iridium/Platinum
x4 out now for about $9.99 each.

If you don't mind changing plugs more often, I'd go with NGK Iridiums
instead of any platinums. You may be able to get 60K (half of 120K
spec on non-waste spark systems) out of the extended service Laser
Iridium but you'll have to check with NGK on that. Alawys refer to NGK
application guide (www.ngksparkplugs.com).


aqlumen@gmail.com wrote:

> I decided to contact NGK on this. Here's their response and I believe
> it to be accurate.
>
> ------------------------------------------------
>
> Hello,
>
> BKR6EIX-11 is a plug designed for improved performance and
> ignitability.
> Because of the plug's fine wire center firing electrode, it should help
> fire the engine easier in cold start situations. Because of the design
> of the plug you may also see improved efficiency and performance. The
> Iridium IX plug would however, require more frequent replacement than
> the OE BKR6EKPB-11 which is a multiple ground electrode platinum plug.
> The multiple ground electrodes will allow the plug to wear more evenly,
> prolonging service intervals.
>
> Kristopher Zdral
> Technical Support Representative
> NGK Spark Plugs (U.S.A.), INC.
>


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Old 02 Nov 2006, 12:17 pm   #8 (permalink)
aqlumen@gmail.com
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Default Re: Iridium or platinum plugs for cold climate?

I looked for Laser Iridiums on NGK's site but they don't have them for
my 99 Camry 4cyl. Looks like the Iridium IX for me. Thanks for the
helpful info, John.

johngdole@hotmail.com wrote:
> The Laser Iridium from NGK is a more durable version of the Iridium IX
> . The Laser Iridum has a thicker center electrode and a platinum pad on
> the ground electrode. This plug is spec'ed for 120K mile service in
> newer Toyotas.


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Old 02 Nov 2006, 07:44 pm   #9 (permalink)
johngdole@hotmail.com
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Default Re: Iridium or platinum plugs for cold climate?

Hey, what happened to the Laser Iridium IFR6T11 (Toyota #90919-01210)
that used to be listed as a replacement for the BKR6E series of plugs?

But rockauto.com still sells them for $7.64, cheaper than the $8.63
plats and not much more than the $6.58 Iridium IX.

You'll have to ask NGK about this.


aqlumen@gmail.com wrote:
> I looked for Laser Iridiums on NGK's site but they don't have them for
> my 99 Camry 4cyl. Looks like the Iridium IX for me. Thanks for the
> helpful info, John.
>


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Old 02 Nov 2006, 07:57 pm   #10 (permalink)
m Ransley
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Default Re: Iridium or platinum plugs for cold climate?

Also cleaning the caps electrodes and replacing the rotor helps, if you
cant aford new wires and a cap. 5-30 synthetic and a good battery with
clean terminals will all help equaly more when its cold out.

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