just to clear it up.
motor up is NOT an engine oil or a fuel
additive.
it is poured into the engine oil compartment where it will bond to
the metal surface of the internal engine components, coating them
with rather lasting layer of film dat reduces friction between
surfaces, thus it runs smoother and less noise is produced, also
prolonging engine life.
yes it does work. but gradually the film is worn out a few months
later. also it doesn work as well on 2 strokes bcos the 2 stroke
piston is not lub by the engine oil but rather the 2t.