Millers Oils Classic Pistoneeze 20w50 Multigrade Engine Oil (5L) is a mineral based engine oil for Classic engines from 1950-1970s. This product is a moderate detergent premium SAE 20w50 multigrade mineral engine oil. It is specifically engineered for classic cars incorporating a modern filtration systems. It is formulated with ZDDP (zinc/phosphorus). API SJ. Millers Oils Classic Pistoneeze 20w50 Multigrade Engine Oil (5L) is a mineral based engine oil for Classic engines from 1950-1970s. High quality solvent refined base oils with latest technology performance additives and shear stable viscosity index improver. Use for engine lubrication of primarily pre-1980 vehicles, both petrol and diesel, which were developed on the multigrade oils of their time. Incorporates modern additive technology with period viscometrics to provide the optimum lubrication characteristics for engines manufactured in the immediate post war period through to the early 1980s. Suitable for higher mileage applications where oil consumption is a problem. The modern technology ensures an oil which will meet the period performance requirements along with up-to-date specifications.