Anti-Oxidants

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MolaKule

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By now we know that the ZDDP ester has been one of the best anti-oxidant and anti-wear compounds ever developed, which makes it a multi-functional additive component.

But anti-oxidants with zero or very low levels of heavy metal content are more desireable in certain driveline lubricants.

Mercaptobenzthiazoles and beta-thiodialkanols are derived from heterocyclic sulfur- and oxygen-containing compositions.


These anti-oxidants are especially suited what driveline fluid?








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Originally Posted By: OneEyeJack
Is the beta-thiodialkanol you reference a monosulfide?



The beta-thiodialkanol referenced contains both a monosulfide and a disulfide, with a majority monosulfide content.
 
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Mercaptobenzthiazoles and beta-thiodialkanols are derived from heterocyclic sulfur- and oxygen-containing compositions.


These anti-oxidants are especially suited what driveline fluid?


These anti-oxidants were developed specifically for ATF fluids.

When the newer, longer life ATFs were being speced on paper, it was apparent that an improved anti-oxidant was needed in order to remain stable for the so-called "lifetime" fills.

So BITOG member 29662 shall be awarded the extinguished Piston Cup Lapel Pin.
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Last edited:
Originally Posted By: MolaKule
Originally Posted By: OneEyeJack
Is the beta-thiodialkanol you reference a monosulfide?



The beta-thiodialkanol referenced contains both a monosulfide and a disulfide, with a majority monosulfide content.


Are these compounds obtained through a mixture of an aromatic amine such as an alkylated diphenylamine and the resulting product of a monohydric alcohol combined with a beta-thiodialkanol (spelling???). In other words is this stuff good for seals and gaskets?
 
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