[s-cars] Synthetic oil?

[Mtgadbois at aol.com]

Gentlemen:
 
I have used Mobil-1 and Delvac-1 since 1976.  My conclusion is that  ANY 
synthetic is better than plain motor oil.  With the current low  pressure piston 
rings I have not seen any wear in the engines where I have had  the head off;  
S6 at 101K & Mitsu at 88K.  As far as viscosity  goes I'd use 10W30.  I've 
tried them all from 15W50 to 0W40 and have not  noticed any difference.  For 
track I suppose I'd use the heavier  weights.  When I use to run my 911 on the 
track I used Delvac-1 which was  probably close to 15W50.  In the olden days 
Mobil didn't list  viscosities.  Just one more thing to worry about?
 
Mark near Chicago