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Re: Avi's Good Note
Well written. I also found it difficult to reconcile evidence that
synthetic was inferior, with a recommendation to use it in certain
I can't recall who said it, but someone with a credible background
claimed that the advantages of synthetic make no difference if an
engine is operating within design parameters. Whether starting up is
an exception makes for interesting debate. This person claimed
synthetic does make a difference when design limits are exceeded, as
in a heavily modified engine, under failure conditions, or when the
design was done in error. This point of view seems believable to me,
and positions synthetic as an insurance policy.
To your expected advantages, I would add the ability to survive a
complete loss of oil pressure. I have heard anecdotal evidence to
support this; I have also heard cases of people losing engines when
they lost oil pressure, so it's not entirely acedemic.
>>> Avi said ...
I expect to gain the following
advantages from using synthetics:
1) More protection when starting the engine and oil pressure is low.
I believe that synthetics provide better residual lubrication
qualities during start-up, before oil pressure rises.
2) More protection against oil caking in the turbo bushings on my
cars. I believe that synthetics are less prone to burning.coking on
the bushings in the turbos after the engines are shut down.
3) More protection against oil jelling if I or another driver ever
overheat the engine and cannot shut it off immediately.
4) Extended oil change intervals, because it tends to maintain
accurate viscosity longer than standard oil, and because I use
Amsoil's filters, which I believe to be superior in filtration to
conventional filters, including the Audi models.
I do not believe that I am gaining a world-beating advantage. I do
believe that I am getting an edge, and I'm willing to pay more per
quart to get it.
I welcome comments to the contrary, when they are phrased in logical
and well-reasoned fashion, and complete in content. You seem like a
sharp guy. Lets have more detail!
Al Powell, Ph.D. Voice: 409/845-2807
107 Reed McDonald Bldg. Fax: 409/862-1202
College Station, TX 77843