Greetings Tacoheads! I'm about to change my Denso Iridium plugs for the first time at 70k on my 2.7 2006 Taco. The question is whether or not to use anti-sieze? Denso has a website www.globaldenso.com/PLUG/ Just click on catalog downloads then click on Spark Plugs Training Manual 2005/2006 (English). This is a 100 page training manual. Page 61 gives notes for installing and removing Iridium plugs and there is no mention of using any anti-seize on Denso plugs. At www.ngksparkplugs.com there is a link under tech bulletins and releases on spark plugs and the use of anti-sieze. NGK recommends NOT to use anti-sieze due to a special trivalent Zinc-chromate shell plating on the threads. Both websites have you change the plugs on a COLD engine. So, what do you all think? Anti-sieze Yes or No?
BTW I purchsed my plugs from www.RockAuto.com At $5.79 a piece. Even with shipping it beats Advance Auto at $8.99 a piece if you don't mind the wait. You can also search TW for RockAuto to get a discount code to use at checkout.