Lucus sells allot of product. To do that they have to convince people it works, and they do that well.
But lets look back a while ....
about every 10 years an oil product comes along that is going to change the world. remember STP?
Then there was slick 50, the swtuff with teflon powder to clog up your filter.
Then duralube, Z-max, lucas, etc.
Same can be said about magic spark plugs.
remember splitfire? Now they have some E3 crap out there. Maybe they work OK, usually not as good as OEM recommended.
Lucas does NOT make a bad product. they use good materials and good blending practices and
AFAIK their stuff will not hurt your engine. The actual benefit is debatable.
A good friend of mine has known the Lucas family since his kid was starting out in Jr dragsters. A very close friend of the family.
He's also a top mechanic both in industrial and in drag racing.
I asked if if he uses any Lucas products, he just shook his head.
Here's the benchmark I use: when MAJOR oil companies start using these additives in their products, AND when MAJOR automobile manufacturers start calling for their use to keep from voiding engine warranties, I'll start using them too.
But it's our money we can each spend it anyway we want. If a product delivers marginal or negligible performance but makes you feel better or gives better piece of mind, then who's to say it isn't worth it?
I recently read an article where a doctor was defending a placebo knee surgery, where the patient thought he was getting knee surgery but wasn't. The results showed that the majority of patients got better even with the fake surgery, probably from the reduced use of the knee and forced recovery time.
The doctor said, so what? If it makes the patient feel better, it works!