I think it is a bit small. Is it enough?

Yes. Since STAGE1 is a highly-concentrated additive, one bottle (100ml) is sufficient for max. 8l of motor oil.

Does it transform the structure of motor oil?

NEVER. We GUARANTEE STAGE1 would NOT change / transform the structure of motor oils.

What's the significant difference to others?

Base oil. Many motor additives contain mineral oil for the price reduction while STAGE1 contains 100% PAO.

How long does it work?

It remains effective up to 50,000km.

Why after 500km? Can I just add it to the motor oil at each oil change?

STAGE1 can be added at ANY TIME, but we recommend to add it after in order to maximize the performance of new oil.