You addict to engine oil ar?? you sniff or drink it???
Oil additive lah, not oil addictive…
It all depend on how you want to take it, most commerical fuel
are already added with additives to create better viscosity and
reduce friction. By adding, you might over neutralise it viscosity
leading to engine heat up easily.
There are many kind of aftermarket oil additives, mostly on
first few adding it produce amazing result like smoothing leading
to ease of crankshalf movement, thus less fuel required, but as it
goes along, engine oil loosen it properties of slick and cooling,
your engine moving parts like cranskshalf and connection rod become
loosen and worn out more easily, this can lead to lost of power and
increase of temperature.
Futhermore, if your additive is not compatitable to the engine
make or usage, it might damage yr piston and piston rings.