At 10:43 PM 6/29/00 -0300, Eugene Balinski wrote:
>Could someone please remind me about motor oil
>ratings ? In particular, what is the "W" for in
>20W50 ? As I remember, it means that the oil is
>20 weight in the Winter (or cold wx), and 50 weight
>when warm, gradually changing from one to the
>other. In this manner, it flows more easily when
>it is cold. Is this correct ?
>
>Thanks,
>
> Gene
>
> 80 B
That is the theory behind it, or so I have heard. But rest assured, it does
not flow any easier when cold. At ten below, it barely moves. A lesson I
learned once when I was in college and I stored my oil in the trunk. I had
to warm the container up before I could even begin to add it to the low
level of oil in the engine.
(I use 10w40 now during the winter months for what little difference it may
make. But I also have a heated garage now ).
David
67 BGT
71 BGT
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