>Well, I'm guessing that the gas companies have started mixing winter
>blends. (for those living in colder climate areas) My last two tanks show
>that mileage has dropped from a consistant 26+ MPG to a 23+ MPG. Anyone
>else ? Not too bad. In past years my previous rides have suffered quite a
Right you are. Exact dates vary from area to area, but Nov 1 to Feb 28 (29)
is common for the "oxygenated" fuels. I see about a 15-20% drop in mileage
with my '91 200q.
You use the term "winter blends." In years past, winter blends meant
something different--specifically different volatility/vapor point and
slightly lower octane level, especially in the nortnern climes (this is
probably still true today). folks more informed than I can probably expand
on this. I don't know how much this would affect mileage.
I am somewhat suprised that you see that much drop with your '86 4kcsq--your
car doesn' have the engine management systems that respond to fuel
differences. I never noticed this much change when I had my '87 4kcsq (2.2L