Mutiviscosity oil does not actually change it's weight as temperatures
increase. 20/50 weight oils are a 20 weight and flow like a 20 weight oil at
0
degrees C. or 32 degrees F. Due to additives and the way the oil is
manufactured, our 20 weight oil has the same cling factor or shear strength as
a 50
weight oil at 100 degrees C. or 212 degrees F. So, it really is a 20 weight
oil
and not a thick 50 weight. Hope this helps and yes, 20/50 is probably the
common weight on the list, brands will vary.
Cheers,
Dave
59 BT7 project
Paradise, CA
In a message dated 12/22/04 10:26:17 PM Pacific Standard Time,
international_investor@yahoo.com writes:
Rich -
You need 20W-50. 10/30 is too light. There is little
risk of spinning a healey bearing because revs never
get that high and tolerances are pretty big.
Regards,
Alan
'53 BN1 '64 BJ8
--- Rich Holman <rich_holman@yahoo.com> wrote:
> I am glad someone brought this up again. It is
> probably old hat to most of you but there are some
> of
> us new folks around.
>
> These oil pressure readings appear to vary with the
> oil viscosity being used.
>
> Would everyone be so kind as to share the viscosity
> that is being used in their engines. I am using
> 10-30
> and am told I should be using 20-50 (sure seems
> thick
> to me).
>
> Thanks,
>
> Rich
> 57 BN4
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