Chemical Components of a DI "Additive" Package

[MolaKule]

It has been awhile since these were discussed. Since interest in growing in the these components, we'll have a series on the chemical components of a DI additive package for Lubricants.

These may require some BITOG and internet searching for the answers:

This series is NOT open to Tribologists or anyone in the chemistry disciplines.

Q1: alkyklated diphenylamines, or the thiadiazoles, or sterically hindered phenols, or Butylated hydroxy-hydrocinnamates, or Tolutriazole compounds may be considered to be functional ----------- compounds.

 

[wwillson]

"DI" = "Dispersant Inhibitor"?

 

[MolaKule]

"DI" = "Dispersant Inhibitor"?

DI is the industry term for the additive package mixture that contains detergents, dispersants, rust inhibitors, metal deactivators, friction reducers, anti-oxidants, cleaners, emulsifiers, anti-foamants, etc.

A blender obtains a DI package from the additive supplier, combines that with selected base oils and a VII to produce a blended product.

 

[Slow Car Sport Mode]

It has been awhile since these were discussed. Since interest in growing in the these components, we'll have a series on the chemical components of a DI additive package for Lubricants.

These may require some BITOG and internet searching for the answers:

This series is NOT open to Tribologists or anyone in the chemistry disciplines.

Q1: alkyklated diphenylamines, or the thiadiazoles, or sterically hindered phenols, or Butylated hydroxy-hydrocinnamates, or Tolutriazole compounds may be considered to be functional ----------- compounds.

"Q1: alkyklated diphenylamines, or the thiadiazoles, or sterically hindered phenols, or Butylated hydroxy-hydrocinnamates, or Tolutriazole compounds may be considered to be functional ----------- compounds."

A: Antioxidants? (Antioxidant)

 

[MolaKule]

Anyone else want to chime in?

 

[MolaKule]

The above list is indeed a list of primary anti-oxidant AO chemistry.

ZDDP also has anti-oxidant properties but is considered a secondary anti-oxidant.

An anti-oxidant reduces the oxidation potential of other components in the formulated oil to retard the formation of sludge precursors. Anti-oxidants allow for extended Oil Change Intervals (OCI). Anti-oxidants are incorporated into ATF's, engine oils, hydraulic oils, and gear oils, machining oils, or into any lubricant that may see elevated temperatures.

Most modern formulations use a combination of the above AO components to extend the OCI.

As with any DI component, the molecular structure becomes disassociated over time, due to heat and combustion by-products so it has to be replaced. This replacement is done during the oil change.