Antifoaming treatments are made to reduce engine oil from foaming although circulating in the engine. These additives decreased the surface tension amongst engine oil and air bubbles, enabling air bubbles to dissipate simply. It's best to include Liqui Moly to fresh new oil that can be possibly cold or warm. https://lanemolid.ampblogs.com/the-smart-trick-of-engine-oil-treatment-that-no-one-is-discussing-71142674