Hey gang! I'm about to do a piston soak/plug change on my 09 Pontiac Vibe with the Toyota 2az fe 2.4L engine and 173k miles. I watched a video where someone did the same thing with success, but he did something I'd never thought of. Basically, he added sea foam in the spark plug holes, and installed new plugs without cranking out the excess. But, he did put the car in gear and move it a few feet in drive and reverse. I'd imagine this is a good way to work the solvent down the pistons provided it doesn't damage anything. I know not to start the engine with non-compressible liquid in there, but he simply pushed the car (I assume) in gear to turn the engine over. I thought I'd do this, but also bump the engine with the plugs removed at the end just to blow out any remaining liquid/carbon. Any thoughts on this? Thanks in advance! Here's the video if you're interested: