The Problem All lubricants oxidize when exposed to increasing temperature; the higher the temperature the faster the oxidation rate. Oxidized oil thickens and loses lubricity, requiring more energy and increasing overall fuel consumption. Oxidized oil will also produce harmful acids that can lead to corrosion and the formation of sludge and varnish.  The Solution AMSOIL … Continue reading What Causes Oil to Oxidize? – The Problem and Our Solution