AC spark plugs should be installed dry. Do NOT use any type of anti-seize lubricant on spark plug threads. Anti-seize lubricants decrease the amount of friction between the threads, resulting in over-tightening.
Why do you put anti-seize on spark plugs?
The nickel coating on most modern spark plugs provide added protection from seizing in aluminum cylinder heads and has made anti-seize less important in spark plug installations. Anti-seize can alter the tightening torque up to 20%, increasing the risk of breakage.
Should I use anti-seize on NGK Spark Plugs?
Metal shell stretch changes the heat rating of the spark plug and can result in serious engine damage caused by pre-ignition. Do not use anti-seize or lubricant on NGK spark plugs. It is completely unnecessary and can be detrimental.
Should I use anti-seize on spark plugs in aluminum heads?
The nickel coating on most modern spark plugs provides added protection from seizing in aluminum cylinder heads and has made anti-seize less important in spark plug installations. Anti-seize can alter the tightening torque up to 20%, increasing the risk of breakage.
Do Champion spark plugs need anti seize?
Instead, they recommend that you use a copper-based product such as our Loctite C5-A Anti-Seize Lubricant. A high-temperature, graphite lubricant that is applied to spark plug threads prior to installation to prevent galling and seizure. The special compound will remain stable at very high temperatures.
Should you use anti seize on Bosch spark plugs?
For Landfill applications, anti-seize is highly recommended. Bosch recommends Loctite Heavy Duty Metal Free anti-seize part number 51605. When applying anti-seize, only put a small amount at the base of the spark plug as shown.
Should you grease spark plug threads?
NGK does not recommend the application of lubricant such as copper grease to spark plug threads as the result is a reduction of frictional forces at the thread faces. This will render the torque readings inaccurate and over tightening could occur by up to 20 percent!
Where should you not use anti seize?
Do not use anti-seize as a lubricant such as on caliper slide pins or on threads for a bushing press or any mechanical assembly that requires a lubricant. Do not use anti-seize on exposed threads because the compound can attract contaminants that may contribute to thread damage when the fastener is removed.
Do you really need a torque wrench for spark plugs?
Spark plugs should be torqued to manufacturers’ specifications. However, it is possible to tighten the plugs satisfactorily without a torque wrench.
Should you use anti seize on Acdelco spark plugs?
Lots of different opinions on this, GM repair manual says no anti-seize if using AC/Delco plugs. Anti-seize will decrease the amount of friction between the threads and the head. This will affect the torque wrench performance.
