Loctite Copper Anti-Seize Lubricant is premium copper anti-seize and thread lubricant that may be used to prevent seizing, corrosion, and galling where high temperature conditions exist. .  

• 1-lb Brushtop Can
• Temperature range: -30°F to 1800°F (-34°F to 982°C)
• Provides good electrical conductivity

Typical Applications: Spark plug threads installed in aluminum, exhaust manifold bolts, engine bolts, oxygen sensors, knock sensors, thermostat housing bolts, fuel filter fittings, and battery cable connections.

Video: This is a good "how to" on Loctite Anti-Seize Lubricant applications, but we're well aware that it mentions buying this product at AutoZone. You can buy this product at AutoZone, that much is true, but only if you want to pay more for it than you will at BigMachineParts.com. We checked.