Oxygenated Fuels - poor gas mileage

I recently took a trip from Western Washington to Eastern Washington
State in my CRX. After filling up in Western WA (which has oxygenated
gas), I got about 37 mpg. I filled up again in Eastern WA (which does
not have the oxygenated gas) and I estimate I'm getting about 45 mpg
(and significantly more power).

Anything I can add to the Western WA gasoline to get more power and
better mileage? - I hear that additives such as fuel injector cleaners
and the like, eat away at a car's rings.

TIA

 

question: is the trip to-and-fro level?

 

Western WA as a rule does not have only oxygenated gas, only certain
stations.

 

|question: is the trip to-and-fro level?

My thought also.
Western WA = sea level or close to it
Eastern WA = mountains? Plateau?


|
||> I recently took a trip from Western Washington to Eastern Washington
|> State in my CRX. After filling up in Western WA (which has oxygenated
|> gas), I got about 37 mpg. I filled up again in Eastern WA (which does
|> not have the oxygenated gas) and I estimate I'm getting about 45 mpg
|> (and significantly more power).
|>
|> Anything I can add to the Western WA gasoline to get more power and
|> better mileage? - I hear that additives such as fuel injector cleaners
|> and the like, eat away at a car's rings.
|>
|> TIA
|
|

Rex in Fort Worth

 

Use Chevron or Texaco gas. They aren't oxygenated, AFAIK.

feroce, in Olympia

 

Most likely it's called WIND!
I drove my neices 84 Civic HB from W. Orygun to N. Idaho along the
Columbia Gorge. Normally he car would get about 33 MPG highway, based on a
360 mile (each way) round trip to N. Cal.
I got about 47 MPG on the leg up to Kennewick (about 290 miles) because of
a strong tail wind.
From N. Idaho to Seattle, we got 30 MPG! She drove that leg, but our
highway driving styles are similar.

 

No - lots of hills, but both ways, so the gas usage should be equal.

 

review an article by Road and Track about ten years or so ago. Oxygenated
fuels do different things to different cars. Not all cars react to these
fuels on the positive side thus you may get conflicting reports. If I
remembe correctly, it has much to do with the method of emission controls
and detection and what the extra oxygen does to the system. I think cars
with advanced emissions were not the benefactors but older cars were.