I wanted my BMW 320i splurge and let clean the engine after about 100k km. I have a full tank and then introduced all Luqio Moly bottle. Because the motor always runs silently, unfortunately I have not noticed anything. But what I have noticed in 1st gear it produces just not as much exhaust, maybe it is related. For me it is very difficult to assess whether this product really helps or not, because you can not as easy to peek into the engine. Nevertheless 3 stars because I believe that it could help in a very old car.
