[DML] An oil question (was) Re: oil discussion

["content22207" <brobertson@xxxxxxxxxxxx>]

Moreover, the oil itself is whatever weight precedes the "W". For
example, 10Wxx oil is only 10 weight, that's all. Miracle additives
are supposed to make the oil act like the heavier number that follows
the "W" after it heats up. I don't trust them. Too often I've seen
multi viscosity oil come out as two separate products during an oil
change: thin watery stuff followed by thick gloppy stuff. I'm assuming
that's the oil separating from its miracle additives. I've also
encountered valve train noise in my AMC with multi viscosity oil.
That's why I use straight 30 weight only (temperatures where I live
rarely drop below freezing). Multi viscosity oil makes no sense for
vehicles in Florida or California either.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, M5E <nitrousgarageworks@xxxx> wrote:
> 
> The simplest way to explain it is: Think of the W
> rating in oil as "winter". How the oil flows at zero,
> or sub-zero temperatures. As the oil is tested it's
> assigned a "value" by the petoleum product
> manufacturer's association. Generally the lower the
> first W value, the faster it flows in cold temp.s But
> realistically zero weight oil, is an EXTREMELY light
> grade of oil, and won't survive long in use. It's
> properties degrade quickly, 









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