12 items found. For further information on glossary terms contact us
Ability of an oil to separate water
Mass per unit of volume.
Additive to keep engine parts clean. In motor oil formulations, the most commonly used detergents are metallic soaps with a reserve of alkalinity to neutralize acids formed during combustion.
Uncontrolled burning of the last portion (end gas) of the air/fuel mixture in the cylinder of a spark-ignition engine. Also known as knock or ping.
Set of gears that transfers the power from the drive shaft to the drive wheels and allows those wheels to turn at different speeds.
German testing standards - Deutsche Industrie Norm
Additive that helps keep solid contaminants in crankcase oil in colloidal suspension, preventing sludge and varnish deposits on engine parts. Usually non-metallic (ashless), and used in conjunction with detergents.
Separation of a mixture of liquids with different boiling points by progressively raising the temperature. In a refinery distillation unit the temperature rises continuously from the top to the bottom of the column and different fractions or cuts are draw
Diesel Particulate Filter, sometimes called a DPF, is a device designed to remove diesel particulate matter or soot from the exhaust gas of a diesel engine.
Resistance to movement caused by oil viscosity.
The temperature at which a grease changes from semisolid to a liquid state under test conditions. It may be considered an indication of the high temperature limitation for application purposes.
Viscosity of a liquid as measured in a rotational instrument, as distinct from the kinematic viscosity where the liquid falls through a capillary tube under its own weight.