1998 S70 T5 Denso Iridium Spark Plugs

RajDog · Post by **RajDog** » 28 Feb 2007, 09:13

Anyone have experience with these plugs on an s70 turbo? And if you do which part number did you use? I've been looking around and it's confusing as to which one I should use. Ipd says they use ik22 for the turbo, on the denso site if I search by car it comes up with the IQ20 and if I do a cross reference search based on the part in the manual, a champion plug it comes up with the IK20 if I remember correct (did it late last night). What is the difference between the IK series and the IQ series. The only info I was able to find on some other random forum was that IK is longer than the other. Basically trying to decide at this point if I should get the IK20 or the IK22. Also wondering if they are worth it. I have had the car for only about 15k-20k and it has almost 180k on it, it is also my first volvo and it's time for a tune up. Is there else I should change while I do this tune-up other than the standard stuff and plug wires?
Thanks

Post by **srnkanator** » 28 Feb 2007, 09:36

Its foolish to go with anything but Volvo original copper plugs . . .don't waste your time

zenmervolt · Post by **zenmervolt** » 28 Feb 2007, 10:54

NGK BKR6ES

Copper plugs, generally around $2.00 - $2.50 each (US).

You can pick up a box of 10 from clubplug.net for $20.50 ($2.05 per plug) which is a good deal.

Iridium plugs are not a good idea in these engines.

The basic, $2.99 Bosch platinums are OK (FR7DP), but there's no performance increase over the Bosch coppers (FR7DC).

zenmervolt · Post by **zenmervolt** » 28 Feb 2007, 10:57

srnkanator wrote:Its foolish to go with anything but Volvo original copper plugs . . .don't waste your time

Bull.

I'll agree that anything more expensive than copper is a waste, but to specify only the Volvo branded plugs is laughable.

RajDog · Post by **RajDog** » 28 Feb 2007, 22:55

It's interesting that so far everyone recommends copper plugs since the volvo manual says to use champion rc8pyp or equivalent for turbo models which I believe is a platinum plug. I looked for these plugs and didn't find much. Anyway how often do you change copper plugs?

Post by **matthew1** » 28 Feb 2007, 22:58

Someone correct me if I'm wrong but the manual's Champion plug recommendation = copper. Don't have it nearby to verify.

It's a 30k mile thing.

RajDog · Post by **RajDog** » 28 Feb 2007, 23:47

Thanks for the service info
For pdf manuals (if interested)
http://www.analogstereo.com/volvo_s70_v ... manual.htm
The more forums I read the more confused I get. Starting to think about the NGK PFR6G platinums after reading so much conflicting opinions on the iridiums, especially the denso's

Post by **srnkanator** » 01 Mar 2007, 07:42

Do not go with platinum, use copper! Using original volvo equipment is not laughable . . . I feel it ensures that the car will run like it was meant to for as longer as possible . . .but if others want to take chances go ahead and try your luck . . .

zenmervolt · Post by **zenmervolt** » 01 Mar 2007, 10:15

srnkanator wrote:Do not go with platinum, use copper! Using original volvo equipment is not laughable . . . I feel it ensures that the car will run like it was meant to for as longer as possible . . .but if others want to take chances go ahead and try your luck . . .

I never said that using the Volvo plugs was laughable.

Saying that other brands are risky, however, is not only laughable, but quite frankly rather ignorant of where the Volvo parts come from.

Do you also buy only Volvo headlight and taillight bulbs? And only Volvo windshield wipers? And only Volvo oil? Do you go back to the dealer for gasoline so you're sure that you're getting the original brand that Volvo intended?

Using a quality, name-brand part like NGK or Bosch or Champion is not "taking chances". You are taking FAR more chances by using that K&N filter. More flow means less filtration. K&N filters have been proven in testing to allow more dirt into engines. (http://www.bobistheoilguy.com/airfilter/airtest3.htm) If I were you, I'd be much more worried about the grit that you're allowing into your engine than about using NGK or Bosch plugs considering that both companies have been producing spark plugs longer than most of us here have been alive.

In fact, the "Volvo" plugs are almost certainly made by NGK. I will guarantee that they are not made by Volvo. From the look of the Volvo-branded plugs that I just replaced in my S70 T5, they are identical to a set of NGK platinums that I had laying around (BKR6EGP) with the only difference being the branding. Given Volvo's partnership with Mitsubishi at the time and the number of Japanese-sourced electronics in these vehicles I'm quite certain that the "Volvo" plugs one can buy at a dealership are, in fact, NGK BKR6EGP plugs that are simply marked differently.

I'll say again, NGK BKR6ES or Bosch FR7DC. Widely available and inexpensive, but high-quality parts.

Post by **srnkanator** » 01 Mar 2007, 16:50

whoa . . . taking this a little bit too far there . . . This post was about plugs was it not? Just trying to steer those away who would go for multi prong, expensive, dangerous to your engine spark plugs rather than OEM. I guess I should have clarified my opinion. I agree with you . . . But, if this is your tone, head to the other site requiring the flame proof suit. When thinking about longevity and trust in the manufacturer I don't think anyone would disagree to go with OEM. Thats all I was trying to say. Didn't mean to upset . . . just trying to help. K&N dangerous? Are you trying to call me out? I think others would disagree . . .This is a forum to post your opinion, experience, and be kind. I am just posting my experience and with those I've talked to, mechanically inclined and not. I've learned alot from this site and am gratefull . . .it has saved me alot of $$$ by learning from others and then coming to my own conclusions . . .

1998 S70 T5 Denso Iridium Spark Plugs

Which plug for turbo?

1998 S70 T5 Denso Iridium Spark Plugs