What is additive? Additives are organic, metallic or inorganic compounds, even chemical elements added to a lubricant, to enhance or deliver the desired properties. Types of additives: – Additives antifreeze. – Additives viscosity index (AVI, AM, VII). – Cleaning additives and dispersing additives. – Abrasive inhibitors and extreme pressure additives (EP). – Oxidation inhibitors. – […]

1. Sort by viscosity – SAE (Society of Automobile Engineers, Automobile Engineers Association): – ISO (International Standards Organization). – NLGI (National Lubrication Grease Institute, USA National Petroleum Institute) 2. Sort by API (American Petroleum Institute). The quality grade of API for gasoline engines is SA, SB, SC, SE, SF, SG, etc. up to the latest […]

Technical advantages: – High oxidation stability – Features high thermal viscosity – Evaporation is lower – Lower freezing temperature – Lower coefficient of friction – Non-toxic Application advantages: – Higher working temperature – Wider working range – Reduce oil consumption – Works at lower temperatures – Energy saving – No harm in contact with food

Viscosity is a determinant of lubrication modes: Oil film thickness and friction loss. 1 . If the oil is too viscous: Impedance increased Abrasive on startup Poor circulation 2. If the oil has a small viscosity: Easily pushed away from lubrication surface Poor adhesion ability Lubricating oil loss

Viscosity index is a change in viscosity with temperature: Viscosity decreases rapidly with increasing temperature Ex: Parafinique mineral oil, viscosity decreased 7 times when increasing T from 60 to 120 degrees C. The decrease in viscosity as the temperature increases depends on the chemical structure of the oil. Viscous type Viscosity index (VI) Application range […]