Mineral engine lubricant perfectly suitable for original engines as well as gearboxes built between 1900 and 1950. This product is formulated with very low detergent level for a complete compatibility with paper / felt / fabric gaskets. It has small detergent level to avoid excessive soot and deposits removing in the lubricating circuit. It can be used as break-in oil if drain intervals are shorten and offers complete compatibility with nonferrous metals as brass, bronze, copper. Reinforced adherence for easier startup even after a long period of immobilization.