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Q&A
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,,, |
QUESTIONS:
|
Explain 'Time
Release
Additives' in
Motor Oils |
|
I've read a lot
in the last few
weeks regarding
'time release
additives' in
motor oils that
suggest that
some oil
components only
become active
due to use, thus
maintaining the
engine
protection for
longer periods.
Is there any
truth in these
claims? Does
Mobil 1 contain
such additives
that only
release their
benefits after
use/time in an
engine? I
noticed that
Pennzoil
Platinum has a
'Time release
formula' and
claims that
certain
anti-wear
additives are
activated as the
oil ages. I'm
obviously not
asking for
details on
specific
additives, just
a general ideas
as to if/how
this process
works. Many
thanks. |
ANSWER:
Yes, almost all engine oils
contain additives that could be
described as time-release. This
is clever advertising that
highlights one of the properties
that common antiwear additives
exhibit. The antiwear additive
ZDDP (Zinc
DialkylDithioPhosphate)
activates as it decomposes at
hot metal surfaces and forms a
glass-like protective layer on
the metallic surface. There are
also other additives such as
viscosity modifiers which change
their physical structure under
certain condition in the engine
and then go back to an earlier
structure when the stress is
removed from the molecule. There
are also cleaning agents which
can be released over time. And
yes, Mobil 1 has all these “time
released” additives as part of
its additive package.
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