This is a great debate...
Seafoam and Z-maxx are both meant to clean out carbon build up, seafoam has been very good at this for years, Z-maxx is a fairly new product but watch the demonstrations on the commercial, it should worry you a bit, especially engine builders and this is why:
Think outside the box :sterb:, engines are built to a specific balance and weight ratio, heads are cut to specific cc ratings as well as pistons for compression ratings, if you add a penetrating liquid to a balanced assembly wouldnt you think it could add problems?
I can gaurantee this product will not spread evenly on all pistons therefore adding liquid weight to more sections than others, might not happen right away but down the line if you add weight of any kind to a single piston it will eventually cause wear, which can lead to vibrations or scratching of cylinder walls, wear of rings, wear of bearings, and much more which of course one failure can lead to all eventually causing catastrophic failure.
Now of course just looking at what the product does it raised a question for me, but I would love to know what you think, or any proven studies to show otherwise, you wont find it but happy hunting, look forward to various opinions.
One person suggested the liquid is burned before it can settle into the piston, well if this is so why advertise that it can penetrate and condition any type of metals, whats the benefit or need to advertise a product and what it can do if it is never able to do so, most would suggest false advertisement but many people have many opinions, what's yours? :headscratch: