The other day I was at PepBoys getting an airfilter for my car. I noticed there was a strange sparkplug by Bosch called Bosch 4plus. That it has four prongs around the spark. It's platinum, supposebly with four prong that you get better spark and combustion. Has anyone have of those on their max? I'm not due for a tune up til 100k and I only have 34k on my car. Just a thought.

 

dont use bosch. 4 prongs is not going to increase spark as there is only 1 spark created at a time and the idea behind multiple prongs is that when one prong wears out, the spark will jump to the next prong with the least ammount of resistance

 

Do not use Bosch 4 Plus plugs. Only use NGK! How do you figure you don't need a tune up until 100 k, given you have 34 k on the car. The recommended interval for changing the OEM platinum plugs is 30 k, so I strongly suspect you have the original plugs in the car. Did the car get the 30,000 mile service?

Have you flushed the radiator and done all tlhe other fluid changes recommended along the way?

 

5th gens are scheduled to have their plugs changed every 105K miles, per the FSM. The NGK double-tipped Platinum spark plugs have a change interval of 105K miles. I personally changed mine out around 60K, and I wouldn't want to take those platinum plugs to 105K anyway.

30K interval is for COPPER spark plugs, FYI.

And for my opinion on the Bosch... I've used those on 3 different cars now, with no real benefit. Every time I took them out, the (TINY, I MEAN, VERY VERY VERY TINY) center conductor was either eroded down INTO the ceramic insulator, or was split in 4 directions. Either way, I don't think the center conductor on those plugs represent good design...

 

I meant to type 30K for the platinums and for some reason was thinking of the coppers which I have never tried. I have been warned not to keep the platinum plugs in too long as they can sometimes be a biatch to get out at the back. A stealership told me that somebody came in with over 90,000 miles on their original plugs and there was one they couldn't get out. They had to take the head off and send it to a machine shop. This is a function of the block being aluminum and heating and contracting seizing the plug in place, I suspect. I had my 30k service done at 35 and drive about 75/80% highway. I am going to change mine at 65k or so if the car is still running fine. At 53,000 miles it seems to be running like the day 1 bought it when new.

 

platinum is good for 60k and if you have problems with seizing then put some antiseize on the threads.

 

i bought those bosch +4s and then returned them after reading reviews.

replaced with ngk coppers!

 

I just put NGK coppers in, after having platinums for 40K, the car deffinatly feels better, specially on top end. Go with Coppers, you can't go wrong. $10 for 6 at auto zone

 

I bought this car brand new since then. I already had my 30k mile service done. They did not change the plugs. It runs just fine. But I would consider changing it at 60k since I live in the desert and very dusty. More likely the plug would be foul by that time.

 

I have used them before, they are decent plugs for the money, did not do any harm to my vehicles. But personally I would not buy anything put stockers from now on.

 

i used the bosch 4 prongs in my svt contour, and hd nothing but problems

I wouldnt use Bosch plugs in my lawnmower!

 

Go with the platinums or the copper NGKs. I wanted to go with OEM wherever possible, so I replaced mine with OEM plats (though they are about $12 a plug) at 60k. The interval is 105, but as mentioned they can become difficult to remove.

 

The problem is that they get extremely hot. If the pistons aren't designed for it, i.e. older cars, they'll burn a hole right thru the top of the piston. Im not a fan of Bosch platinums and agree to get nothing but NGK's. Peace_

 

Off topic but I find it funny that Nissan uses Bosch for the O2 sensors and not the plugs. That must mean something right there. NGK coppers for me thanks.

 

yea it means that NGK made a higher bid then bosch.. =X ..

 

I just bought some NGK copper plugs. I'll see if it'll make any difference. Currently, I have the NGK platinums.

 

What I found about coppers is that the engine is rougher when its cold

 

Really? I don't think that's going to be a problem because I don't get on the gas that much until the car warms up anyway.

 

NGK Iridiums only for me.

 

True, not a problem at all but it was just something I noticed

 

Nismo: you were right about the engine being rougher when it's cold with the copper plugs. I just put the copper plugs in today and noticed that when I started the car up.

 

any Bosch spark plug:

any NGK spark plug:

 

how about those champion plugs? i already have one in my lawnmower, so i just gotta but 5 more, any experience with these?