Synthetic engine oil SYnteco for PREWAR cars (before 1950).Perfect for car equipped with Propellers.Good injection at low, cold temperatures to help engine stars .Height antioxidant for rust and oil deposit dirt during rest period. His specific qualities eliminate exhaust smokes caused by extra oil consume. Redices the oil leak of valves gaskets and piston rings to avoid the propellers damage. Caratheristics: Specific weight 15°degrees KG/L 0,875-0,855 Viscosity at 100°degrees cSt 21,9-26,1 Viscosity Index >150 ref81309112