Recommended spark plugs

[LibertyOrDeath]

I am going to be changing my plugs out this week and I was thinking maybe Bosch Platinum +4. This is my first plug change in my Liberty. Anyone out there have a better plug I should use.

 

[JeepJeepster]

rubbish

Use either NGK or autolights. I used Autolight Double Platinum myself.

 

[BoyNamedSue]

Just wondering why not use same plugs that it was built with?

I know they don't last long, but you would think you would at least have no problems with them since Jeep spec'd the Liberty with them. If you're going to change them every 25,000 miles or so, it wouldn't really matter if they don't last long.

Do different brands/types of plugs actually improve performance?

 

[jeepkj02]

I use autolite platinums (single).

 

[Marlon_JB2]

Just wondering why not use same plugs that it was built with?

I know they don't last long, but you would think you would at least have no problems with them since Jeep spec'd the Liberty with them. If you're going to change them every 25,000 miles or so, it wouldn't really matter if they don't last long.

Do different brands/types of plugs actually improve performance?

I've noticed a slight MPG increase using Bosch Platinum plugs. (Yes, an actual increase, NOT just restored MPG from getting a tune up.)

I didn't use the +4 though... those just look scary to me.

 

[seriouse]

I use NGK iridium

 

[aksloan]

I use NGK iridium

Do you know the part number?

I'm searching and coming up with the following from apwonline.com

NGK Base Iridium IX Spark Plug ZFR6FIX-11 list $16.75 cost $6.59

and

NGK Stock Numbers Iridium IX Spark Plug 6441 list $10.49 cost $6.59

It doesn't appear they are the same based on the list price.

 

[JeepJeepster]

I dont have the NGK part numbers but I have the Autolight double platinums.

http://img.photobucket.com/albums/v612/jeepjeepster/30k service/DSCF8912.jpg

 

[seriouse]

Do you know the part number?

I'm searching and coming up with the following from apwonline.com

NGK Base Iridium IX Spark Plug ZFR6FIX-11 list $16.75 cost $6.59

and

NGK Stock Numbers Iridium IX Spark Plug 6441 list $10.49 cost $6.59

It doesn't appear they are the same based on the list price.

I'm using ZFR6FIX-11 part number 6441 i bought them at Pep Boys for $7.99 each. The part number is correct. 6441 for the spark plug ZFR6FIX-11 so i dont know why they have a different list price.

 

[LibertyOrDeath]

I've noticed a slight MPG increase using Bosch Platinum plugs. (Yes, an actual increase, NOT just restored MPG from getting a tune up.)

I didn't use the +4 though... those just look scary to me.

I decided on the +4's they had a money back guarentee if I didn't have a noticeable improvement in both power and economy. When I swapped my plugs all of the gaps had eroded to .050. So far I have seen a slight power increase towards the top and a minor MPG improvement. I can also corner better, have more ground clearance, and my brakes work so much better.:^o <--edit--- That's actually a bit creepy.

 

[sevenhelmet]

Autolite double platinums. Avoid OEM and Champion.

 

[LibertyOrDeath]

I was undecided between NGK Iridium and BP +4. I got the +4's because they had a money back guarantee.

 

[tjkj2002]

I was undecided between NGK Iridium and BP +4. I got the +4's because they had a money back guarantee.

Denso Iriduims are the best I have ever ran.

 

[LibertyOrDeath]

Well since you got pretty good mileage on that trip to Moab I might just throw some in the next time I need plugs.

 

[tjkj2002]

Well since you got pretty good mileage on that trip to Moab I might just throw some in the next time I need plugs.

I'm actually using AutoLite double platnuims right now,I just have been lazy about ordering the Denso's,to many other parts need buying first(SFA swap).

 

[t2raz]

how about those split fires ?? http://www.autosupermart.com/store/shop/splitfire00001.html

i havent used them just asking.

 

[LibertyOrDeath]

wtf.gifchairshot.gifpukey.gifgetout.gif

But seriously. They aren't called SplitFoulers for nothing.

 

[jg45]

Just watch the Bosch Platinums. They seem to not like the type of ignition system used. I was running the +2 and then one day the engine stumbled pretty hard coming off from a red light. I pulled the plugs and noticed metal transfer to the center electrode from the ground electrode. Google Bosch Platinum and Waste Spark ignition for more information.

 

[NomadKJ]

X2

http://www.globaldenso.com/PLUG/power/features.html

Denso Iriduims are the best I have ever ran.

 

[indianrefining]

I am going to be changing my plugs out this week and I was thinking maybe Bosch Platinum +4. This is my first plug change in my Liberty. Anyone out there have a better plug I should use.

Using the "Plus 4" plugs will make one (and only one) difference: more empty space in your wallet.