<VV> Corvair Tall Tales ~ Is 'straight weight' oil better ?

[J R Read]

I've been using Mobil 1 15W50 for a few years now - ever since the ZDDP 
scare.
Later, JR

----- Original Message ----- 
From: "Charles Lee" <chaz at properproper.com>
To: "'Dennis Pleau'" <dpleau at wavecable.com>; <virtualvairs at corvair.org>
Sent: Tuesday, November 01, 2011 7:54 PM
Subject: Re: <VV> Corvair Tall Tales ~ Is 'straight weight' oil better ?


> 50 miles **AWAY** from that "service" station ?!?!?
>
> Did he check your air too ?
>
> As I remember, Corvairs required 'straight weight' oil, 30W or 40W, and
> multi-grade was taboo?
>
> Was it an 'urban legend' or was it true that, when 'generic' mechanics put
> multi-grade oil in Corvairs, that the engine heat would break the oil down
> and cause lack of lubrication and overheating ?
>
> Today's multi-grade oil is better, but is it OK to use it in a Corvair?  I
> look for single weight, but it's harder to find.
>
> Charlie
>