Preferred anti-seize compound for spark plugs? - Toyota Yaris Forums

RMcG · 08-13-2021, 02:49 AM

Is there a preferred anti-seize compound for spark plugs? For example, would an aluminum based anti-seize compound be better for an aluminum block engine?

I am planning to use Denso Long Life Iridium spark plugs SK16R11 link, specs under my initial below. The present (old) plugs have been in the car for 13 years and the mileage is about 107K and they have never been changed. And I am planning to leave the new plugs in for another 100K miles. So I am thinking about using anti-seize compound.

But I am aware there is controversy about using anti-seize compound. The instructions for this plug say: "Note: The installation torque values shown above apply to new spark plugs without lubricating the threads. If threads are lubricated, the torque value should be reduced by approximate 1/3 to avoid overtightening." link.

See also this link that says: "PLEASE NOTE:

Torque recommendations are for spark plugs with new gaskets.
If using anti-seize compound, use sparingly and reduce torque by 30%.
Denso has created their recommendations based on the general consensus of most engine manufactures. In the case of a discrepancy between the plug manufacturer and engine manufacturers recommendations, always default to the engine manufacturer."

If I do use anti-seize compound I will only use a small amount. Any answers to my questions at the beginning of the post or any other comments will be appreciated.

Thanks,

R.

Part Info:
Spark Plug
SK16R11 ( 3324 )
Mfr Label Iridium Long Life
Resistance 5000
Ground Electrode Tip Design Platinum Chip
Ground Configuration Standard
Ground Electrode Core Material Nickel
Center Electrode Core Material Copper
Center Electrode Tip Material Iridium
Gap Size 1.1 mm
Ground Electrode Quantity 1
Hex Size 16.0 mm
Manufacturer Heat Range 16
Seat Type Flat
Reach 19.00 mm

08-13-2021, 02:49 AM	#1
RMcG Drives: Yaris manufactured after 2007 Join Date: Nov 2010 Location: North America Posts: 250	Preferred anti-seize compound for spark plugs? Is there a preferred anti-seize compound for spark plugs? For example, would an aluminum based anti-seize compound be better for an aluminum block engine? I am planning to use Denso Long Life Iridium spark plugs SK16R11 link, specs under my initial below. The present (old) plugs have been in the car for 13 years and the mileage is about 107K and they have never been changed. And I am planning to leave the new plugs in for another 100K miles. So I am thinking about using anti-seize compound. But I am aware there is controversy about using anti-seize compound. The instructions for this plug say: "Note: The installation torque values shown above apply to new spark plugs without lubricating the threads. If threads are lubricated, the torque value should be reduced by approximate 1/3 to avoid overtightening." link. See also this link that says: "PLEASE NOTE: Torque recommendations are for spark plugs with new gaskets. If using anti-seize compound, use sparingly and reduce torque by 30%. Denso has created their recommendations based on the general consensus of most engine manufactures. In the case of a discrepancy between the plug manufacturer and engine manufacturers recommendations, always default to the engine manufacturer." If I do use anti-seize compound I will only use a small amount. Any answers to my questions at the beginning of the post or any other comments will be appreciated. Thanks, R. Part Info: Spark Plug SK16R11 ( 3324 ) Mfr Label Iridium Long Life Resistance 5000 Ground Electrode Tip Design Platinum Chip Ground Configuration Standard Ground Electrode Core Material Nickel Center Electrode Core Material Copper Center Electrode Tip Material Iridium Gap Size 1.1 mm Ground Electrode Quantity 1 Hex Size 16.0 mm Manufacturer Heat Range 16 Seat Type Flat Reach 19.00 mm Last edited by RMcG; 08-13-2021 at 03:02 AM.