• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

How long are AP764's (plugs) good for..?

  • Thread starter Thread starter chris kelvin
  • Start date Start date Dec 9, 2005

chris kelvin

New Member
Sep 11, 2005
67
0
0
Dec 9, 2005
#1
  • Dec 9, 2005
  • #1
Hey guys, i seen on autolite's site that the plugs are warranted/gaurentee for like 3 year..i believe. But in your experiances, do they last a while being that they are single platinum..?

I'm asking cause i put them in my 4.6 thunderbird 5K miles ago (may 05) and recently pulled them, to regap to .053 (.056 was causing misses) which completely cured the problems i was having, i put back the plugs and one wasn't "in" correctly...somehow, and blew out when i started it. The tread's where fine thank god. I got 1 new ap764 (cause i was broke) and put her in, everything nice and tight. So basically i got 7 plugs with 5K and one brand new. I DO NOT want to change plugs again..period. I don't wanna chance messing up that plug hole..cause that's expensive, and i'm trying to get a stang this fall...

Would the plugs last for another 20-30K everyday driving etc.. I'm not concerned about performance drop if the plugs get old. Thanks alot... BTW when i pulled the plugs they where all in good shape..like new, the smaller gap did help in a major way.
 
K

Kilgore Trout

Fried or Broiled ?
10 Year Member
Mar 30, 2005
4,749
95
134
Dec 9, 2005
#2
  • Dec 9, 2005
  • #2
Well, the stock double paltinums in 99+ Mustangs are advertised to last 100,000 miles.
 

chris kelvin

New Member
Sep 11, 2005
67
0
0
Dec 9, 2005
#3
  • Dec 9, 2005
  • #3
Yeah same with mine..the 95 birds came with motorcraft plat's good for 100K. But for some reason, when you look up plugs and stuff they all seem to be 20-30K...?!?!? Even some expensive ones.
 
K

Kilgore Trout

Fried or Broiled ?
10 Year Member
Mar 30, 2005
4,749
95
134
Dec 9, 2005
#4
  • Dec 9, 2005
  • #4
Well, I run copper plugs and accept the fact that I will have to change them about every 2-3 years. I do this because I think copper produces slightly better performance plus I like working on my car.
 

chris kelvin

New Member
Sep 11, 2005
67
0
0
Dec 9, 2005
#5
  • Dec 9, 2005
  • #5
Yeah the copper is best for performance, that's a definite. I remember when i worked at autozone i had all the 50's something muscle car guys ALWAYS wanting them...yet we had like NO motorcraft coppers..

Lol for kicks i would bring out the bosch double platinum with the stupid 4 electrods...they always got a kick out of that.
 
You must log in or register to reply here.

Similar threads

9
Engine Donor '00 Mountaineer meet '91 Fox
  • 91firecracker
  • May 11, 2026
  • Fox 5.0 Mustang Tech
  • 2 3
Replies
41
Views
892
Fox 5.0 Mustang Tech May 28, 2026
91firecracker
9
B
'03 GT Fuel Pump/Pressure/Delivery Issue
  • Brodach
  • Oct 21, 2025
  • SN95 4.6L Mustang Tech
Replies
8
Views
893
SN95 4.6L Mustang Tech Oct 31, 2025
gkomo
M
Progress Thread mnky99 2001 V6 evap core, ac compressor, heater core replacement
  • mnky99
  • Sep 5, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
507
1996 - 2004 SN95 Mustang -General/Talk- Sep 5, 2025
mnky99
M
Fuel fuel pump relay?
  • maxine-70
  • Nov 30, 2023
  • Fox 5.0 Mustang Tech
Replies
5
Views
1K
Fox 5.0 Mustang Tech Dec 4, 2023
Shawneebear93
T
Newbie here with an odd story
  • thequadfather
  • Jul 20, 2024
  • The Welcome Wagon
Replies
3
Views
621
The Welcome Wagon Jul 22, 2024
thequadfather
T
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?