Autolite Platinum Plug 4.6 L AP764
#3
#4
I thought the double plats were required aftermarket cause the plugs fire electrode to ground on 4 and ground to electrode on the other 4. Isn't that why the manual says when removing plugs if you put the old plugs back you gotta keep em in the same cylinder? and there are two different plug numbers used.
Clarification please KY
Clarification please KY
#5
Originally posted by Tiger
I thought the double plats were required aftermarket cause the plugs fire electrode to ground on 4 and ground to electrode on the other 4. Isn't that why the manual says when removing plugs if you put the old plugs back you gotta keep em in the same cylinder? and there are two different plug numbers used.
Clarification please KY
I thought the double plats were required aftermarket cause the plugs fire electrode to ground on 4 and ground to electrode on the other 4. Isn't that why the manual says when removing plugs if you put the old plugs back you gotta keep em in the same cylinder? and there are two different plug numbers used.
Clarification please KY
Last edited by APT; 04-30-2003 at 01:48 PM.
#6
APT is pretty much dead on with what he was saying. For the longest life and best performance you should use a double platinum plug. You can use a single platinum or even a standard copper plug and the truck will still run fine. I would think they should go more than 12K, I would say 20-40K would be more like the max life out of a copper or single platinum in our trucks.
#7
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#8
I replaced my factory plugs with NGK Iridium last Fall. What can I say, they work fine so far. Nothing good, or bad that I can tell, but I only have about 8k miles on them. However, I believe they still have a nickle ground so I would not use them in a 4.6L without making sure. No sense using a $9 plug if it isn't any better than a $0.99 one.