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Soon I will be changing spark plugs on my 2017 LT. I know I need to put a bit of dielectric grease in the boots to assist in removing them the next time I change plugs. Should I put it on the electrical connector to the coil rail too? I've seen in recommended in some how to videos. Traxy, this is one I hope you will answer.
 

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Yes, yes and yes. But not in the boot. some silicone grease will do fine in the boot, you do not want conductive grease in the boot. My Trax has 121000kms and the plugs are just starting to show misfires now. Cylinder 1 only so far, I will be changing the plugs soon.
 
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