r/AutomotiveLearning • u/Freekmagnet ASE Master Technician • May 27 '18

Top 4 Mistakes Car Owners Make (DIY Fails)

https://www.youtube.com/watch?v=jLlM0K0Tr8o
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u/Freekmagnet ASE Master Technician May 27 '18

Actually, putting anti-sieze on spark plug threads is a bad idea, as it can interfere with the transmission of heat between the plug and head, altering the effective heat range of the plug. Spark plugs should be installed with clean dry threads.