by putt@[EMAIL PROTECTED]
Mar 11, 2007 at 07:43 AM
>Didn't receive any responses to this
> question back in Jan. Trying again: My
> gas mileage on a 1991 Sedan Deville
> has dropped from the mid 20's
> (Highway) to the 15 range during the
> cold Ohio weather.
>Any things that would be prioritized on a
> checklist?
Gas formulas are different in the cold weather, but there is nothing you
can do about that. R U in 10% ethanol country?
Some things to check: air cleaner! Keep the cars' engine tuned and
properly maintained. Check for any trouble codes. One piece that has a
great effect on gas mileage is the Oxygen sensor(s). My DeVille is a
few years older and the FSM states that piece is supposed to be changed
every 30K miles. I replaced mine and it made a difference in mpg.
Dave S(Texas)
