What I use:
1x Lambda Primer - Before Oil Change
1x Lambda Petrol - For Fuel Tank
1x Revo Friction Modifier - For After Oil Change

My opinions:
Sorry, I do not know the exact term or terminology for the correct description
But what I can say, by using the above product, my 8 years old engine feels younger and smoother again.
although i can't really say by how much, since it's not a fair comparison (previously using semi sync lubricant and ron97 petrol few years ago, now using mineral lubricant and ron95, also my car tires needs balancing and alignment now)

overall, i feel is money well spend (vs engine tune up, engine overhaul.)
will buy again in future