Autolite plugs?
 

Hey guys I just picked up some autolite platinum plugs and was wondering what you guys think of them?

http://www.amazon.com/Autolite-AP105.../dp/B001E0U0KU

Those are the ones I bought and am planning on putting them in tomorrow. I believe im still running the factory plugs...after 110k Ibelieve its time for new ones.

What will I notice with new plugs? Power? Mileage? Response?

For the 3.0 you should only be using double platinum plugs , preferably fine wire.

https://www.ranger-forums.com/4-0l-ohv-sohc-v6-tech-33/can-u-use-single-platinum-spark-plug-4-0-sohc-119625/

Motorcraft AGSF22PP is the correct part number, which crosses to an Autolite AP103, NOT a AP105. Looks like you ordered the wrong plugs.

if i were you i would not use platinum plugs.
lower performance and gas mileage for more $$$

realistic,you wont notice the loss in gas mileage or performance - but copper is no doubt a better conductor.

the first thing you do in every ford you buy is replace the platinum plugs with copper!

I just looked at them again. They are double platinum's. So copper are better?

iridium plugs were designed to work with coil packs. etc. etc. etc.

but at the end of the day - especially in the ford world; copper plugs consistantly perform better than any other plug you can buy.

if you look at the mustang guys, the first mod many of them will do is ditch the platinum plugs and go copper

copper is simply a better conductor - and its dirt cheap. and it will provide the most: spark, HP, fuel mileage and driveability available. (not that you'll notice a diffrence no matter what plug you chose anyway)

the main benefit to these platinum plugs and the reason they were made is for their serviceability. They're designed for people who go 100k miles without a tune up. in addition, many people have engine problems now because they are buying these cars used and the previous owner never changed the plug for 120k miles - because the car drove just fine (benefit of platinum - drives fine for 100k miles) and when they try to remove the plug - its stuck and they end up stripping a thread.

they have no other major use - they cannot conduct as well as a copper and again - cost much more. one platinum plug is the same as all your coppers - AND you get a better conductor.

high price does not equal better. for example, bosch platinum 4s are pretty expensive plugs.. and have 4 electrodes. by logic - it should perform better... but in reality, platinum 4 plugs have caused NO STARTS in many vehicles.. these vehicles ran flawless when switched to copper. Recall: Bosch is a quality product and attains a well earned reputation. but a quick google search or euro car forum search will reveal that bosch platinum 2+ plugs are a plague.

like wise, you'll see many car forums where people will religiously switch from platinum to copper.

to be fair though, sparkplugs are all quality (except champion plugs in my opinion)
platinum plugs aren't bad. but i really believe that distributors like to hype up the "platinum" name. these plugs shouldnt cost 6 - 7 bucks a pop!
If you are the type who is on top of maintanence - i would def. go copper over platinum
if you want to go another 60k+ miles without changing plugs - then i would go platinum.

diffrent product for diffrent use.

well how long are the service intervals for the copper plugs?

actually the oe plugs are irridium for a reason. i swithched them out for less quality and it ran like crap compared to the irridium i put back in. they are about 6 bucks per plug but they will last you longer and perform better in my opinion.

You are right, and you are wrong. First, copper has a lower resistivity than platinum, as you said. The resistivity of copper is: 1.68×10−8 OHM-M, and the resistivity of platinum is: 1.06×10−7 OHM-M

Next, take a look at these photos of Motorcraft double and fine wire platinum plugs. With the double platinum plug, there are small beads of platinum on the center electrode, and the ground electrode (red circles).
On the fine-wire platinum plug, only the center electrode has a platinum
"slug" (red circle). Using the resistivity numbers, and the number of "squares" of material you have in the platinum, the increase in resistance with the platinum will be in the 10's of milliohms range. (10 milliohm = 0.01 OHM). If you look at the total series resistance from the coilpack to the plug tip, the majority of the resistance will be in the spark plug wire, which will be in the several 1000's of ohms range.

Bottom line, the platinum resistance increase of 10's of milliohms over copper isn't going to do SQUAT, and this is where your dead wrong about copper over platinum plugs!

Motorcraft double platinum:

http://bob-ayers.smugmug.com/Trucks/...4_3i4zB-X3.jpg


Motorcraft fine-wire platinum:

http://bob-ayers.smugmug.com/Trucks/...9_dcXBS-X3.jpg



One other thing, the word is different, instead of diffrent

I had the same problem with my 4.0L. I will never run anything but the stock Motorcrafts. The Autolite double plats that I got developed a miss after a week, and then the porcelain cracked on them also.

SO is it better to use fine wire singles or double plats? ya'll are confusing me now.

So for the Single Plat fine wire, the part number is SP-498 right? But i have the 4.0

again - IRIDIUM was designed for coil packs...

platinum was designed for long service intervals.

I don't know where any platinum was designed for anything except service life.

if anything, use iridium; but these rangers, despite having coil packs - come with platinum...atleast mind did.

what does that tell you? I doubt there is a serious advantage to ANY spark plug on any ford with fuel injection.
only difference being at the end of the day - copper will technically in a lab test perform slightly better than any other plug, and that any other plug will likely last a lot longer.
my truck stopped knocking /knocking type sound when i put in copper plugs but to be fair - the platinum plugs had 100k miles on them.

i bet you wont notice a difference in performance no matter what autolite/motorcraft plug you put into your truck. the only diffrence will be in your wallet. you either spent 6ish bucks...or you spent 40ish


EDIT: Google platinum vs copper sparkplugs - that will give you some more information before you make a purchase. you can see the experiences most car users have with either of the 2

You can get the AGSF12PP from rockauto.com for $1.81 per plug, those should run best in your 2000 3.0. I just put a set in my 99 and it runs like new and for that price for discontinued motorcrafts you cant beat it and its exactly what the manual calls for, not the drop in AGSF22PP that burns hotter and could cause issues on some engines. I hope this helps.

WRONG AGAIN! Iridium plugs were not designed for coil packs! Iridium is a harder metal than platinum, and erodes at a lower rate than platinum.

The important thing with spark plugs is using the correct heat range, and you are guaranteed the correct heat range if you use the OEM Motorcraft
platinum plug, NOT COPPER!!!!!

IMO, fine wire Motorcrafts are a good deal considering that they last 75~100k miles and save some wrench time too. Bypass the Ford dealer ($9 apiece for SP-498's, for example) and you can get the identical plugs for under $4 each + shipping (Summit, RockAuto, etc.). Shop around and you might do even better. I recently did a "Make Offer" on eBay and got 8 new-in-the-box SP-497 fine wire Motorcrafts for $2.87 each including shipping.

+1 If your 3.0L is an FFV, the AGSF12PP (double platinum) or AGSF12FM (fine wire platinum) run great!

when iridium plugs came out - they were designed to be utilized with the new coil pack type ignitions that were coming out.

this is a simple google search - you'll quickly see that most people prefer and get better performance and bang for the buck with copper plugs

heat range is simply a matter of what plug you buy..and if you buy the right one for the car you'll be within range.

this isnt a science lesson, or a real serious matter; all these plugs will perform just fine, but im willing to bet that copper will still deliver the best spark.

Original Thread maker - use google, and get your knowledge from multiple sources, books, and advisors with technical backgrounds.

if your that serious about it, you will find what your looking for

I have a problem with people posting bad information! I have shown you where the lower resistance with copper idea you have simply isn't true.

Obviously, you aren't technical at all! Let's see some scientific theory to
back up your claims!


AN update, here are a couple TECHNICAL articles, one from Autolite that states that the copper spark plug being better than platinum or iridium is only a MYTH:


http://www.ricksfreeautorepairadvice...park-plug-myth


http://community.familyhandyman.com/...-the-myth.aspx

I think you have a problem with insecurities as a whole - your having a field day on my so called "wrong information" almost delayed orgasms to my comments.
Chill - Chiiiilll brotha'; it'll be fine

GOOGLE original thread maker... Google...then make your decision.

check the ford explorer forum ( i forget what its called) they have more people and tech stuff and have more opinions you can get for our engines (yea - correct my grammar, lol)


AND FYI - 2 gay ass links from the world wide web on a theory is useless..hardly scientific - i dont care what formulas are on the site from "homers home community garage" or whatever it is. i can find a thousand and one more pages that support my fact over your theory..

i think guys just pissed he spent a lot of money on something usless...
jmo
Later - and OUT!

Actually, one of the links is from Autolite:

http://www.autolite.com/company/auto...nd_dis_engines


All you have provided is lip music......nothing technical at all!

FACT? I think I proved your FACT wrong about the resistance theory. But then again, you probably didn't understand what total series resistance is.

I really didnt spend that much, it was 7.50 for a pack of two... so 3 25 a plug.

But I already have the double platinums so im gonna try them out. I was just asking what other people have noticed with them.

The only problem you bought AP105s, and the correct plug is AP103.

My second post I state that I was wrong they are the double platinum 103's.

I looked them up using the walmart book so it should be accurate.

just a little FYI for the thread maker. When you do get your old plugs out, if the very top where the plug wire slips on has a dot of like white or blue paint on it, they are the original plugs. They put that dot on from the factory. Only reason i say that is you said you werent sure if they were ever changed. Also my opinion on which plugs to run. Motorcraft in a ford is always the best bet, but autolite was put in fords from the factory back in the day.