Synthetics generally build up much less sludge than conventional oils, so I am surprised that the engine already has synthetic in it. Yes, wait for the oil change to regular dino oil at 10W30, the real cheap stuff. Then add the AutoRx.

Note the cam that you can see through the oil cap. All of that brown stuff should be gone when the AutoRx is finished cleaning. If you have a RMS leak, keep the AutoRx in the oil for at least 3K miles, or until the leak goes away. AutoRx will not repair the RMS if the leak is too large.

AutoRx for a reasonable engine using systhetic will clean the engine during the first 1,000 miles. 3,000 for a dirty engine.

I would still read the back of the Seafoam bottle and see if it can be added to the gas tank, rather than the block. You will soon be using AutoRx anyway.

Klaus
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Always willing to listen, just not able to take direction.