Which spark plug?

oldusedbear · #1 (**permalink**) 05-15-2008, 07:14 PM

My questionable research is telling me I should buy the Motorcraft AGS F22WM plug for my 2001 E450 V10.

Is this in keeping with what the Big Guys say?

TeamMudd · #2 (**permalink**) 05-16-2008, 07:18 PM

depending on your dealer price i'd stay away from them (not the MC plug, just the price).

go to wally world and get you a set of auto lite AP103's! they are the same heat range as the MC plugs, and in fact they are one in the same company just a separate packaging

oldusedbear · #3 (**permalink**) 05-16-2008, 07:56 PM

Thanks Jason. I appreciate your reply.

From what you say, I gather that some of the stuff I read here earlier, may not be the straight skinny - - namely, there were some posts that implied that the Motorcrafts were made to FORD specifications and went on to imply they really weren't the same. I THINK I remember someone saying that the coatings or finish on the plugs were different.

Maybe that's just an urban legend?

BLK94F150 · #4 (**permalink**) 05-17-2008, 01:40 AM

Get the Motorcraft plugs. I've had new Autolites self destruct in the cylinder. They are about the same price anyway. Go to Autozone, they sell MC.

Mike

TeamMudd · #5 (**permalink**) 05-17-2008, 10:20 AM

theoretically that could have happened to the MC plug too. same plug same make. probably 8 out of 10 people i talk to talk trash about autolite plugs. alot of it is personal choice, but i'd go with what is recommended. there is no need for a fancy plug. i've been running autolites in my mud drag truck for over 5 years, my z71 for over 10, and now my SD. as many plug changes as i went threw in that mud drag truck, i'm sure i would have ran across a bad one, haha!

but it's like fram filters too, i never had a problem while i was running them, and i stopped when i took one out of the box, it had a "rattle" to it, so i returned it and went with WIX (or NAPA) and never looked back.

BLK94F150 · #6 (**permalink**) 05-17-2008, 02:01 PM

From what I have heard, the plugs are not the same. They are not made on the same line. I have an Autolite and a Motorcraft from my truck downstairs. I'm going to go compare them.

Mike

TeamMudd · #7 (**permalink**) 05-18-2008, 07:02 PM

sounds good to me, make sure they are the same #, and you do a good cross cut section to tell the EXACT difference.

skipperw · #8 (**permalink**) 05-20-2008, 03:50 AM

Get Densos.

Sport45 · #9 (**permalink**) 05-20-2008, 07:00 AM

Shouldn't that be APP103 for a double-platinum plug? I change mine at 30-40,000 mile intervals and they come out with the same gap as installed.