Spark Plug confusion

SIB01 · 26th February 2019, 20:08

Hi All,
First time Rover owner here having picked up a 2.5L V6 Connoisseur SE last weekend.

I've read a few articles on here about spark plugs and using iridium ones as the V6 back ones are a pain to get to (I have a mechanic mate helping me with this.....hopefully).

I ordered some Iridium Bosch FR6KI332S ones from Amazon and only AFTER placing the order did I notice it saying these are ONLY compatible with the Rover 75 if it has LPC / CNG conversion

.

Is this a bad description from Amazon or do I need to order something else? I know Iridium is better if you HAVE an LPG conversion due to lower voltage rate but are the specific plugs I have ordered wrong for my car? It doesn't say anything about this on Bocshes own page where they are recommended for use on a 3.0l Mitusbishi V6 PETROL......

Should I order the double platinum ones instead? It's a second car so I won't be doing high miles in it I just thought the nominal cost of the iridium wold be better

Thanks for any advice

slovcan · 26th February 2019, 22:45

I would never choose iridium over platinum. In modern cars the platinum plugs are good for at least 60,000 miles and, in many cases, 100,000 miles. Iridium is a gimmick and has reportedly caused grief for a lot of people when they have physically failed. Send them back to Amazon for a refund. Platinums should be available locally.

Cheers,
Glenn

Lord of Hog · 27th February 2019, 07:56

I've got iridium tipped plugs in my V6 and in my Outlander and have never had any problems with them. Mind you I didn't have any problems with the platinum ones they replaced either.

Jim Jamieson · 27th February 2019, 12:36

Whatever plugs you choose they are a fiddle to get at the rear bank.

There’s an access panel bolted onto the engine bay bulkhead which gives slightly better access but allow plenty of time.

You literally have to sit on top of the engine to get at the blighters.

SIB01 · 27th February 2019, 21:42

Thanks for the advice, I read more into the plugs I chose originally and have ordered a different set anyway. They ARE iridium tipped but were at least recommended to the vehicle (Denso iridium ones). Hopefully they'll be OK....at least the new ones have the correct gap setting

26th February 2019, 20:08	#1
SIB01 Newbie Rover 75 Tourer Join Date: Feb 2019 Location: Kirkcaldy Posts: 10 Thanks: 0 Thanked 21 Times in 2 Posts	Spark Plug confusion Hi All, First time Rover owner here having picked up a 2.5L V6 Connoisseur SE last weekend. I've read a few articles on here about spark plugs and using iridium ones as the V6 back ones are a pain to get to (I have a mechanic mate helping me with this.....hopefully). I ordered some Iridium Bosch FR6KI332S ones from Amazon and only AFTER placing the order did I notice it saying these are ONLY compatible with the Rover 75 if it has LPC / CNG conversion . Is this a bad description from Amazon or do I need to order something else? I know Iridium is better if you HAVE an LPG conversion due to lower voltage rate but are the specific plugs I have ordered wrong for my car? It doesn't say anything about this on Bocshes own page where they are recommended for use on a 3.0l Mitusbishi V6 PETROL...... Should I order the double platinum ones instead? It's a second car so I won't be doing high miles in it I just thought the nominal cost of the iridium wold be better Thanks for any advice

26th February 2019, 22:45	#2
slovcan Gets stuck in 75 Tourer CDT MK2 manual in Glorious Grey Join Date: Jan 2018 Location: Slovakia Posts: 987 Thanks: 926 Thanked 346 Times in 252 Posts	I would never choose iridium over platinum. In modern cars the platinum plugs are good for at least 60,000 miles and, in many cases, 100,000 miles. Iridium is a gimmick and has reportedly caused grief for a lot of people when they have physically failed. Send them back to Amazon for a refund. Platinums should be available locally. Cheers, Glenn __________________ Southern Slovakia Anything can happen in Formula 1 and usually does - Murray Walker 1999 Triumph Trophy 900, Saddlesore 1600, Iron Butt Riders Association #63720 2005 Rover 75 CDT Tourer MK2

27th February 2019, 07:56	#3
Lord of Hog Gets stuck in Rover 75 2.5 V6 in Wedgwood Blue Join Date: Dec 2015 Location: Felbridge, East Grinstead Posts: 982 Thanks: 250 Thanked 294 Times in 206 Posts	I've got iridium tipped plugs in my V6 and in my Outlander and have never had any problems with them. Mind you I didn't have any problems with the platinum ones they replaced either. __________________ Conformity is not morality. Consensus is not truth.

27th February 2019, 12:36	#4
Jim Jamieson This is my second home Rover less ! Join Date: Jun 2011 Location: Tarbolton Posts: 3,442 Thanks: 393 Thanked 888 Times in 542 Posts	Whatever plugs you choose they are a fiddle to get at the rear bank. There’s an access panel bolted onto the engine bay bulkhead which gives slightly better access but allow plenty of time. You literally have to sit on top of the engine to get at the blighters.

27th February 2019, 21:42	#5
SIB01 Newbie Rover 75 Tourer Join Date: Feb 2019 Location: Kirkcaldy Posts: 10 Thanks: 0 Thanked 21 Times in 2 Posts	Thanks for the advice, I read more into the plugs I chose originally and have ordered a different set anyway. They ARE iridium tipped but were at least recommended to the vehicle (Denso iridium ones). Hopefully they'll be OK....at least the new ones have the correct gap setting