I highly recommend NOT using aluminum "never seize" on the new plugs, but I do believe in "Copper"" "Never Seize" for aluminum head LS engines. Its the 3rd different metal. Using aluminum is same as the head metal and will lock up and corrosion can happen. Good luck getting the old ones out if this is the first time.. I find a warm engine works better.
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"The Future Belongs to those who are STILL Willing to get their Hands Dirty" .. my Grandfather
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