Spark plugs. What type of plugs last how long and

[BigRich954]

Looking to get new plugs in my car. Whats the pro/cons of each type of plug car has about 85k miles so im not looking for the best kind.

How many miles do plugs last really ?

 

[bdcardinal]

And this would be on what type of horseless carriage?

 

[javacontour]

If the ones you've currently used for 85K miles have worked well, get that kind again.

 

[hate2work]

Originally Posted By: javacontour
If the ones you've currently used for 85K miles have worked well, get that kind again.


Exactly, plugs are another thing that gets overthought( is that even a word? ) on this forum.

 

[dgee]

Originally Posted By: javacontour
If the ones you've currently used for 85K miles have worked well, get that kind again.


120k on stock Toyota plugs.
Replaced then with OEM.

 

[mechtech2]

Stock is usually best, by far.
This is because modern cars use good plugs.
Retrofitting an older car can have benefits with newer type plugs.
Plain steel is great -for a very short while.
Platinum tips are very good, and iridium is better.
An extended tip is almost always a blessing, unless there are piston/valve clearance issues.

 

[BigRich954]

Yea trying to stay semi cheap didnt want to put the money out for stock plugs even though they worked great. maybe i will

 

[scudpilot]

Save yourself headaches and use the same OEM plugs!

 

[mopar_monkey]

ngk's work well in everything, they are cheap, easy to come by and very good quality.

 

[javacontour]

Originally Posted By: BigRich954
Yea trying to stay semi cheap didnt want to put the money out for stock plugs even though they worked great. maybe i will


The NGK or Denso iridium plugs for my Vibe are $6-8 each, so that's what, $24 to $32 for four of them. At most a V8 doubles that to $48 to $64.

I suspect if you have a newer car, you are looking at Platinum or Iridium tipped plugs and are looking at $3-$8/plug.

Even the lowest cost copper plugs are probably $1.50 to $2.00/ plug. I'm not sure you can save much in this arena. Shop for the lowest price on the factory plug.

Not to mention, if you use a non-spec'ed plug and the ignition system is damaged, how much will those parts cost to replace?

Buy what is recommended and sleep well at night knowing you did the job right.

 

[Herz]

Autolite/Motorcraft for my fords
Autolite/Delco for the gms
Champion for the Jeep
OEM for all japanese cars

Copper, I usually run 30k, plats I go up to 100k never had a issue. Most of the time the plug will foul due to the engines problems.

 

[Trav]

Denso TT double platinum on sale at AAP for $1.99 each
Good plugs for cheap money.

 

[Jim_Beverlin]

I have had no problems running Autolite Double Platinum plugs in Chevy 4.3L Vortec V6's, Ford SOHC 4.0L V6 and Chrysler SOHC 3.7L V6. They run roughly $7 each at AutoZone but I have run them over 100K in each of the above motors. Plugs are, for the most part, difficult to access and change. The SOHC 4.0L Ford motor is the 1st vehicle I have owned in almost 50 years of driving that I have had to take in to have the plugs changed. The Chrysler 3.7L was not bad if you have the tools and the Chevy 4.3L plugs depended on the vehicle they were in. Just remember to put antiseize compound on the threads whether the heads are aluminum or cast iron and use dielectric grease for the plug wire boots. Plug wires are no fun to change anymore.

 

[rshaw125]

I pulled the original champion plats out of my 2000 Intrepid cleaned, gapped and re-installed. The wear was minimal and my mileage has not budged. I'll check them again in 10,000 miles. that'll make 130,000 total.

 

[PandaBear]

OEM usually calibrated their ignition system with the plugs they use, venturing away from them can cause some problem even if you use the same type of plugs as OEM (or even upgrade from OEM type to, say, platinum or iridium).