Ngk plugs

I'm about to change my plugs on 4.0 but ngk has a PDFs which tells you nt to use antiseize paste. What are other members doing?

 

the owner manual list NGK and denso (my truck came from factory whit the NGK..)
dont over torque , check the gap and put a LIGHT coat of anti-seize !
NGK PN:

$10 LFR6C11 NGK (7787) LFR6C-11 V-Power Spark Plug, Pack of 1

LFR6C11
Denso PN:K20HR-U11

 

I just changed to NGK's at 30k, so far I like them, although the old plugs looked good & the gap was fine, the NGK's seem to smooth out the engine a little (that could be just in my mind) gas mileage did improve noticeably . To your question, Yes, I used antiseize (very sparingly) jmop

 

I'm sorry I don't know what I was thinking of I bought denso also. I think it's my seadoojetski that uses ngk. Thanks for answering my question. Happy holidays

 

NGK puts a special plating on the threads they say serves the same purpose as anti-seize.

 

when i changed mine at 30 thousand the ngk's were noticeably worn more than the denso's were. replaced with denso's

 

Just did mine, first interval since buying it and the previous owner had Densos in the passenger bank, NGKs in the driver. It's possible someone got lazy and only swapped one bank last time around (not wanting to disconnect the heater core hose/support bracket to get at the last 2 cylinders there) but wow, those NGKs were dead while the Densos still had about 1/3 life left at least.

Stick with OEM and feel free to use a little anti-sieze on them either way, it's not going to hurt and it might just help.

 

Seems that is the way they leave the factory, one bank NGK, other bank Densos.

 

This is how Toyota decided to show both of their plug suppliers they were getting 50% of the business.

 

Yes. They come from the factory one side NGK, other side Denso. Toyota wisdom

Forgot to mention, I apply anti-sieze to every sparkplug I change. And about everything else I touch on my truck. (Wisconsin winters)

 

I always use Anti seize regardless. As long as they are properly torqued no worries. I always check torque on the next oil change following plug replacement. Just my 2cents.

 

+1

 

i find it interesting that the densos are the better wearing plugs. I know on the 3.4L NGK plugs were the ones that look almost new at 100k and the densos look like a 2 dollar whore.

 

Differences in spark plug wear may simply be:

A: Fuel - good fuel vs. cheaper brands
B: Engine Seal - Valve stem seal/piston ring leakage
C: Driving conditions - stop-n-go vs. highway
D: Type of driving - aggressive vs. conservative

Drive for a year with NGK; then a year with Denso and compare.

 

I use NGK and anti-seize

 

x2

The gap on my three Densos was close to 0.050, and the NGKs were closer to 0.060. I'm sticking with Denso.

 

I'm thinking it's past time to change mine, what is the proper gap?

 

I followed this write-up. Gap spec listed is 0.039 to 0.043.

http://www.tacomaworld.com/forum/technical-chat/30479-how-spark-plug-change-1-gr-fe.html

 

Anti seize EVERY spark plug change and the proper torque.

I bought my plugs at the dealer and they're pre-gapped. Trucks been running fine (on my 2nd spark plug change).

 

I don't think they are, I changed mine at 30k both were will within tolerance,
if I were to pick one, it would be the NGK, only because that is what most Japanese car makers use, Yes they are usually a little more spendy. but I am not going to disagree with Japanese, engineers. I have never liked the idea of two different brand plugs in a vehicle, not sure why this is done, one can only guess, but by putting all NGK's in mine really smoothed out the engine, & gas mileage improved noticeably, maybe Denso's would do the same, I don't know. If I ever need new plugs I may try them.jmop