Originally Posted By: RevelationLion
But, do these products do a good job of cleaning caked on carbon deposits from piston tops?
In the world we currently live in, these products represent the best cleaning chemical technology we know how to apply, with regard to cleaning combustion chambers. Is that good enough? Its up to you to decide that.
Always watch for the Registered Trade Mark symbol or an indication somewhere on the label that notes a Registered Trade Mark or Registered Trade Name. That's your clue that the company selling you the product has exclusive rights to a name for some chemical (for example) with a conventional description.
Eg:
Zoop ®
Zoop is H2O
The jar will say "we have the highest concentration of Zoop ® you can buy in this product family". No-one else can claim to contain Zoop®, since to do so would be a violation of Intellectual Property Law, so obviously it's true. But other products may contain just as much, or more, actual water (H2O).
You can see a real-world example of this in action if you spend a moment the next time a Pharma company puts a TV or Magazine ad up with regard to a drug they are marketing.
There have been legal problems for Pharma companies with certain drugs and IP Law. You are required to defend your Trade Names; which means (and this always causes web blogs and forums to explode in indignation, blaming the company when it's really not the company's fault) you MUST by law send the cease and desist letter, and follow that up with legal action up to and including a lawsuit, if the letter fails to work.
If you don't, you will lose the right to that name. So, Aspirin® is no longer a legal trade name, because Bayer failed to sue everyone who used that name when they should have used ASA instead of Aspirin®. So Aspirin® is now Aspirin (no trade mark), and anyone can use it to refer to ASA.
Today you see drugs marketed with the Trade Name and the Generic Description together. This is to insure the Trade Name maintains it's legal protection.