I used polytron oil for the first time with an engine treatment for a passat b6 2.0 diesel. The engine runs quieter and no longer emits smoke. I recommend with all confidence.

5w40 polytron After 21000km the oil is black turf (toyota yaris 1.33vvti 190000km). The car did not consume oil… the consumption is the same. Compared to what I used before AZ 5w40 I don't think it's worth the money difference. However, it is an oil superior to what is on the market like Castrol etc

I put 5-30fuly synthetic engine oil and engine treatment. POLYTRONin the personal car Opel combo1.7 dtian fab 2003with 344 000 km ..I am very satisfied and feel major positive changes in .the engine operation ???… I will come back with opinions… .meritori 5 ***** with congratulations ?? ?