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Discussion Starter · #1 · (Edited)
Hi, I just thought I'd share a pic of the original Denso spark plugs out of a 2009 Rav4 3.5 after over 200k miles since I know some people are interested and I only found a handful of posts like this browsing Google. It looks like it was a waste replacing them and I'd be good for at least another 100k miles. I will post back on any difference in fuel economy, but I'm doubtful since most claims of fuel economy improvements are BS.

Yes, I know there's more than 3 cylinders:giggle:. I'm waiting on one of the intake manifold hex bolts to come in before doing the rears since one was completely was rusted out. (Part # 90126-A0007).

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Discussion Starter · #4 ·
Thanks for the feedback @ravenuer and @Turtlepowa . It makes me feel a bit better about throwing money at something where I really didn't have an issue. The replacement hex bolt for the manifold so I can finish the job should be coming in tomorrow.
 
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