Originally Posted by 01acls (Post 16441296)

Price is not a factor when selecting Ruthenium plugs vs other plugs because Ruthenium plugs are more efficient and will make up for the price difference and then some with better MPG returns, better sparks, and better sparks for a longer time period.

Originally Posted by losiglow (Post 16441278)

The OEM plug for a 2000 TL is the Laser Platinum, PN PZFR5F-11. However, that was before Iridium. Since Iridiums came out, most guys replace their old platinum's with those. It's not that the performance is necessarily any better, but they tend to last longer since Iridium is a harder alloy. Here are your options:

https://cimg8.ibsrv.net/gimg/acurazi...5ae2089fa0.jpg

The new Ruthenium supposedly last even longer but I don't know if there's any evidence of that yet since there would be very few cars that have gone 100K+ miles since they came out. NGK states that Ruthenium also creates a more efficient burn but I'm not convinced of that either. According to their website, Ruthenium plugs were designed for newer engines. Not to say they wouldn't work just fine for older engines though. But personally, I still use the Iridium's. They've worked fine in the past are are much less expensive.

Originally Posted by 01acls (Post 16441464)

OP,

You can decide the type of plugs to use based on someone else's experience or opinions? Most people would choose experience over opinions.

LoL, so no one here have actually used or using the Ruthenium plugs except me and yet you guys have already formed your opinions based on nothing? That is just so wrong on so many levels.

Originally Posted by 01acls (Post 16441296)

Price is not a factor when selecting Ruthenium plugs vs other plugs because Ruthenium plugs are more efficient and will make up for the price difference and then some with better MPG returns, better sparks, and better sparks for a longer time period.

Originally Posted by thoiboi (Post 16461627)

I fail to believe all 6 coils are ALL bad at the same time.

Originally Posted by Jamesharoldk (Post 16461646)

True...what are your suggestions for coils to purchase this weekend.

Originally Posted by losiglow (Post 16461467)

The PZFR5F is already gapped. I don't recommend gapping iridium plugs. The center electrode is more fragile than old copper plugs and the likelihood of damaging it while trying to gap the plug is high.

It may not be a bad idea to check the gap - just for good measure. But in the tech manual, it specifically states not to gap the plug. Granted, this is from the 4G TL manual but I'd bet money that the note to not adjust iridium plugs is very likely in the 2G as well.

https://cimg1.ibsrv.net/gimg/acurazi...08aa047acf.jpg


If you decide to gap them, Denso provides some good instructions:

Spark Plug Installation | DENSO Auto Parts



I've taken plenty of advice based on experience but you stated better mpg, better spark and better spark for longer. Did you compare mpg of your car with iridium vs. ruthenium? And how can you prove that it provides a better spark or better spark for longer? Your statements are purely anecdotal. There's no data to back it up. I'm all for new products that provide better results but until I see data, or at least a lot of opinions based on experience, I'll stick with the tried and true parts.

Originally Posted by Jamesharoldk (Post 16461646)

True...what are your suggestions for coils to purchase this weekend.

Originally Posted by whitetiger5 (Post 16461872)

@Jamesharoldk
amazon sells the denso coil 673-2310 (reg $65 each) for $36 at the moment. I keep that in my cart in case the day comes where i need one...

Originally Posted by Jamesharoldk (Post 16461887)

👏🏻🙏🏻

Originally Posted by losiglow (Post 16441278)

The OEM plug for a 2000 TL is the Laser Platinum, PN PZFR5F-11. However, that was before Iridium. Since Iridiums came out, most guys replace their old platinum's with those. It's not that the performance is necessarily any better, but they tend to last longer since Iridium is a harder alloy. Here are your options:

https://cimg8.ibsrv.net/gimg/acurazi...5ae2089fa0.jpg

The new Ruthenium supposedly last even longer but I don't know if there's any evidence of that yet since there would be very few cars that have gone 100K+ miles since they came out. NGK states that Ruthenium also creates a more efficient burn but I'm not convinced of that either. According to their website, Ruthenium plugs were designed for newer engines. Not to say they wouldn't work just fine for older engines though. But personally, I still use the Iridium's. They've worked fine in the past are are much less expensive.