You mileage and engine life would go down and your emissions would go up
year round.

In the wintertime your heater will function poorly.

I do not believe that an automobile engine has been commercially built in
the last 30-40 years that was designed for a 160 degree thermostat.

Engine temperatures of 190-210 are normal (that is why 210 is dead center of
the gauge)


"Kevin" > wrote in message
ups.com...
> Are there any advantages/disadvantages to using a 160 deg. thermostat
> versus a 195 deg. thermostat? I have a lot of knock and ping that I
> suspect is due to excessive temps in the combustion chamber since my
> timing seems dead on. The temp gauge fluctuates between 190 and 210
> deg. depending on how fast I'm traveling. Also the clerk said the smog
> police would fail me if they saw I was running a cooler thermostat. Do
> they care what temp my car runs at? If it matters I have a 1987
> Wrangler YJ 258 ci Carter BBD, 5 speed manual. Any input is
> appreciated.
> Thanks,
> Kevin
>