Latest AC Spark Plug # for LS1 Please

[TheBigGuy]

99 Coupe 6mm 123,000 miles all stock. I require the latest # so that I can replace AC # 41 - 985 with 60,000 miles on them.
Secondly, yes or no to Anti Seze or Mobil 1 on the threads ?

 

[catbert]

99 Coupe 6mm 123,000 miles all stock. I require the latest # so that I can replace AC # 41 - 985 with 60,000 miles on them.
Secondly, yes or no to Anti Seze or Mobil 1 on the threads ?

ACDelco Parts

I don't use anything on the threads.

 

[LLC5]

99 Coupe 6mm 123,000 miles all stock. I require the latest # so that I can replace AC # 41 - 985 with 60,000 miles on them.
Secondly, yes or no to Anti Seze or Mobil 1 on the threads ?

I have used anti-seize on spark plug threads for decades with no problems.

GM says not to use anti-seize, only use a drop of engine oil.

 

[c4c5specialist]

Hi there,

41-110 is the correct plug and DO NOT REGAP THEM!!!!

Also, engine oil and torque to 11 ft lbs.

Allthebest, c4c5

 

[TheBigGuy]

What happened to Corvette Mechanic ? I came here because I could't get C/M.
Thank you for the information.
Is C/M coming back or what? Should I use Anti Sieze on the threads. Or Mobil1 or nothing at all ?
Again thanks,

The Big Guy !

 

[bill81vette]

c4c5specialist is the C/M
He is one of,if not THE best!!!!

Sent from my DROIDX using Tapatalk

 

[LLC5]

What happened to Corvette Mechanic ? I came here because I could't get C/M.
Thank you for the information.
Is C/M coming back or what? Should I use Anti Sieze on the threads. Or Mobil1 or nothing at all ?
Again thanks,

The Big Guy !

Use a drop of engine oil on the spark plug threads.

 

[Zzing]

What is the technical reason for using oil instead of anti-seize?

 

[LLC5]

What is the technical reason for using oil instead of anti-seize?

From my understanding, GM states that anti-seize can impeded the ground source to the electrode.