10/40 is fine IMHO. Unless you have an engine that burns oil, 20/50 is
overkill.
Mike
----- Original Message -----
From: "David Totah" <dstotah@hotmail.com>
To: <datsun-roadsters@autox.team.net>
Sent: Wednesday, May 08, 2002 5:04 PM
Subject: Oil
> Would someone e kind enough to suggest which multiweight oil should I be
> using for the car (69' SRL311)? A friend told me I should use 20w-50
during
> the summer, and 5w-30 during the winter. An old mechanic recommended
10w-40
> (which is what I have in there right now).
> I haven't found any documentation online suggesting one weight over
another.
>
>
>
>
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