- Can I use this product when low on fuel?
Yes, you can. However, to improve the cleaning effect we recommend using it with a full fuel tank.
- Can be used for carburetor cars or direct injection engines?
It provides excellent clean effects for all types of the gasoline engines.
- How often should I use this product?
We recommend to use it every 5,000km or 6 months whichever comes first.
- Does this New DDR Premium clean exhaust gas?
"It is expected to clean the exhaust gas due to removing various deposits on engine internals.
However, this improvement does not promise the cleanness equal to the new condition of a car."
- How long is the duration of the product effect?
"The effect continues while gasoline contains DDR.
DDR provides protection from contamination while it is on a metal surface, however the engine gets dirty gradually. We recommend using DDR regularly."
- Will DDR work with a new car?
It might be difficult to feel the exact effects when the car is new however regular use will help to prevent the deposits providing turn solid.
- Will DDR work with an old car?
"It will be very effective but just onetime use may be not enough to remove many adhered solid deposits.
If you use it with engine which is extremely dirty, it may give you the feeling that the engine condition becomes worse when too many melted deposits flow into the combustion chamber.
For this measure, we recommend using this product regularly.
- Is it OK to mix with other product?
Do not mix DDR with other products. It will not improve cleaning effect, and it may lead serious damage to the engine due to chemical reactions.