From:
buddyleejjc2_REMOVE_243419_THIS_@yahoo.com
--- In <a href="/group/cosworthvegas/post?protectID=219233066105193209050199029077192253163098100009128121188190230091025019053061151110147">cosworthvegas@yahoogroups.com</a>, doctorduke <<a href="/group/cosworthvegas/post?protectID=091233212180056219138097203245129208071">no_reply@y...</a>>
wrote:
> The best oils to use are HD diesel engine oils, API service
category
> CI-4. They have a richer additive package including anti-wear,
> anti-corrosion, detergent, and dispersant additives than current
spark
> ignition oils designed for modern cars.
>
> Any oil will provide basic lubrication, but it's the ADDITIVE
PACKAGE
> that provides longevity.
>
> The only advantage of synthetic base stocks is longer life due to
> their lower oxidation rate and a wider viscosity range, but
assuming
> you don't drive your CV in below zero weather, the viscosity range
is
> not an issue. You should change oil at least once a year, so if
you
> only drive a few hundred to a few thousand miles, synthetics have
> little value.
>
> Most discussions on motor oil are moot because very few guys
> understand the importance of or pay attention to additive packages,
> but the additive package is the most important motor oil
> characteristic for a vintage collector cars that you want to last.
>
> Motor oil advertising is 99 percent marketing BS, which offers
nothing
> of value about the suitability of their product to a particular
> application, so the only thing you can go by is the API service
> category and SAE viscosity range. The rest is bunk.
>
> Duke
I will have to agree with Duke about the advertising bunk. I have
seen the inside of cylinder walls of a few CV motors, using 20-50
Mobil One, to the cheapest 10-30 oils out there, however, it depends
on how much you use the car. If a daily driver, it depends on the
climate. Do not use 20-50 in below zero weather, this is my opinion,
but 20-50 seems harder to warm up in this kind of climate. In the
winter I use 10-40 synthetic mobil one, in the summer 20-50,
depending on the car. My dad's race car, 3136, uses 10-30 mobil one,
we change it before we start it for the summer season, and turn it
over by hand a couple of time s brfore starting. In my opinion, it
all depends on how much you use the car. As for my daily driver, 10-
40 mobil in the summer, and 10-30 mobil for the winter.
Later,
John J. Cowall
P.S. I live in Michigan
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