Rick's Free Auto Repair Advice

Posts Tagged: anti-seize on spark plug threads

Anti-seize on spark plug threads

Should you apply anti-seize on spark plug threads? Generally the answer is No. But there are a few exceptions. If the spark plug threads have a chrome plated look or are shiny, they’ve been treated with an anti-seize coating at the factory. Do NOT apply anti-seize to these spark plugs. Here’s why applying anti-seize can actually screw things up. In the OLD DAYS, Copper spark plugs never needed anti-seize In the old days when engines and cylinder heads were made from cast iron and copper spark plugs only lasted 12,000 … Read More


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