<VV> Multi-grade oils in Corvairs

[Mark Durham]

Tom, I ran a 10W40 in my last corvair back in the late 60's and early 70's
and never had a oil related problem. I put 180K on that car, had to overhaul
the engine because of a cam gear failure once, and so I can see where
Richard Widman's oil research has merit to find the best oil, but a 10W40
works well. I currently use a 5W40 in the winter because of better start up
flow, a Shell rotella, which still has some higher levels of ZDDP in it and
expect no problems.
Mark Durham

On Sun, Oct 25, 2009 at 12:09 PM, TOM DUDAK <viviandudak at bellsouth.net>wrote:

> I have had my share of VW's and always ran 15W40 in the winter and 20W50 in
> the summer, and very spirited driving, plus flat out highway running and
> I've never experienced a problem. So with that in mind I now run my Corvair
> the same 15W40 in the winter and 20W50 during the summer. I was partial to
> Castrol GTX but have switched to Royal Purple and have been pleased so far.
>
> Tom Dudak
> 65 Customized
> Corsa Vert
> 140/4spd
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