Quote:
Originally Posted by twilkins
Thank you for the other perspective. Is the view on not putting anti-seize on simply because it is not needed or is the theory that it can actually do harm? I'm trying to figure out why someone wouldn't use it?
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The general thought is properly spec'd plugs with the platinum coating don't need it, that the coating essentially replaces anti-seize. Assuming anti-seize isn't slopped over the plug electrode it's presence has no effect on performance.
The only real downside using anti-seize is not increasing the installed torque to maintain a good clamping force between plug and head. There is a fascinating thread on FTE where a user casually tests to the breaking point plugs in a head:
https://www.ford-trucks.com/forums/1...ead-heads.html. To me that's one of the all-time best threads, a real eye-opener IMHO.
Remember the V8 & V10 Modular Motors are the same design apart from the two additional cylinders.
Because the factory torque spec is 7-14 ft/lbs when I use anti-seize that's increased to 21-23 ft/lbs. I've used this method since 2008 on three different gasoline 5.4 engines, accumulated mileage about 200K between them. One is due for new plugs this coming summer---I hope to remember to check the prevailing torque, see if the plugs have loosened or are difficult to remove after 55K+ miles on Motorcraft plugs.