Motul Historique Engine Oil - SAE40This oil has been formulated for engines and gearboxes built between 1900 and 1950. It is a mineral monograde lubricant with very low detergent level for a complete compatibility with paper felt and fabric gaskets.A low detergent level avoids soot and deposits removing it in the lubricating circuit. It can be used as break-in oil if drain intervals are short.This oil has complete compatibility with non-ferrous metals as brass bronze copper and has reinforced adherence for easier start even after a long period of immobilisation.