Anyone ever change the spark plugs themselves on their GSF? I've looked all over YouTube and the closest I can find are videos for ISF spark plug changes, which seem somewhat difficult due to the cramped engine bay. I would imagine the process would be a bit easier on the GSF due to additional space, but not sure.
For comparison, I changed plugs on my wife's IS250 and that was fairly difficult due to the small engine bay and need to remove the upper plenum for access.

Just want to get an idea of the level of difficulty when it comes time.

 

I haven't done it yet. Plugs are good to 100k miles. Might be a bit before the wife gets there. I've done the IS F a couple of times, but it was always in conjunction with a valve lash inspection, so totally different level of effort there. Honestly, it doesn't look a whole lot easier because they moved the injector drivers over the valve covers to highlight the intake manifold on the RC F and GS F.

 

i have done it on a rcf and its tight but with the right sockets and extensions and swivel sockets its not to bad pro will take like 1.5 hrs

 

What he said ^^..I've changed mine on the GSF. Took a bit of time but nothing crazy

 

Just did it on my GsF and it took about 5hrs because it was my first time and I dropped a small ratchet wrench, which added to the time. I’m sure it be a couple of hours quicker if I did it again. Difficulty comes from the back sections, getting the plugs off without damaging them, mine were on pretty tight especially on the left bank closest to the battery, on the right side I was able to use a needle nose with electrical tape wrapped around the tip. You’ll definitely need a swivel and a long extension.

 

I bought locking wobble extensions for the sparkplugs and a dedicated spark plug socket. I was very unhappy about having the socket do a great job holding the plug while inserting it, but refusing to let go of it once it got in and torqued. The locking extensions make this not a problem at all.

Having done this on the IS F a few times, the GS F wasn't hard at all, and in ways is a whole lot easier than the IS F. Not as much stuff to remove to get access.

 

I know what you mean about the socket getting stuck after torquing. It happened to me a couple of times so the next one I made sure to I wiggle it around while I slowly pull the socket back and it helped.