<VV> oil question

[BobHelt at aol.com]

In a message dated 4/13/2011 6:36:03 P.M. US Mountain Standard Time,  
kcvair at hotmail.com writes:

What is  the opinion of some of you oil experts on this oil I found in an 
Orscheln Farm  and home supply store.  The oil is called "Country Tuff" and 
has the  designation "SL" which I under stood to mean it has the ZDDP 
ingredient we  want for our Corvair engines.  I've already put the Mobil 1 in one 
car  and wondered if I might be asking for trouble if I were to use this oil 
in one  of the other ones???  
Ken Clark of Sunny and Springtime in Indiana  

I suggest that you review the archives on oil. If there is a starburst  on 
the front of the container, DO NOT USE THAT OIL. Also what viscosity are you 
 referring to? And where is the SL located on the container.? it makes a  
difference. it needs to be at the top of the donut.
Regards,
Bob Helt