Bar Dahl Maxi Compression is the Ölzusatz of the new Metallfreien gerneration to give optimum performance in the engine oil in new and used engines with a special bar Dahl protection against wear the innovative exclusive bar Dahl Fullerene (R) C60 Polar Plusable for petrol and diesel engines, with or without turbocharger or compressor/catalytic converter and particulate filter.