Holy s**t!
Just last night I went to a local Autozone (México), to buy what I need for an oil change, and the clerck offered me an "additive"...
One of those "additives" were Lucas... "It will make last your engine four times more than normal... just use it every 4 oil change and thats is", the guys said.
Have you used in your own cars?, I asked to him... "Well... nor really, but sells very well" :rolleyes:
EDITED TO ADD:
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