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
. 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).
Yes, I know there's more than 3 cylinders