[s-cars] Poor gas mileage

[Alvin Labonite]

I am only averaging between 260-270 miles per fill up of about 16 gallons. 
My commute going to and from work is pretty much a crawl for about 45 
minutes or more. I'm thinking that's where the problem is. The car hardly 
get to see 4th gear on the freeway but I used to see higher numbers than 
that a while back. I wonder where the culprit is. Oxygen sensor maybe? But 
that was replaced by the PO a year or two ago. hmmm..

Other than that, the car is running strong. Suggestions?

TIA

Alvin
95 Avant