Leaded/Unleaded

[sfg]

bruce plecan wrote:
> 
> Does anyone know what they do for O2 sensors in
> places where they sell just leaded.  
...snip
I fully expected my Blazer to go into open loop after extended use
on leaded, so I watched it carefully just to see. Figured the
O2 sensor would die and CAT would clog. Nothing happened. Fuel
mileage actually improved a tad. Then after returning to USA,
I again was amazed that I passed emissions with the same O2
sensor I had used on leaded gas overseas! I bought the Diacom
kit before leaving, in anticipation of trouble w/lead. O2 mV
changes were noted before, after and during lead. All was 
unremarkable (unheated OEM O2 sensor).  Steve