this is wierd as heck mpg

okies I usually get around 11 to 15 mpg on my 2.3L efi 1992 convertable. Well I just had a little tech problem namely my cooling fan broke and melted (the electrical kind). And suddenly I was faced with having to watch my heat very carefully. Well that problem is solved after driving about 90 miles(10 of it about city) back and forth on the freeway to a junkyard, however I discovered something amazing. The two days before mostly city added up to a total with the junkyard trip of 133.2 miles then back home I filled up did a quick calculation and I got an average of 26.95 m/g. I was like WTF since I owned this thing and well it's got 154000 miles (over 20k miles mine in a year and some change ) on it now I have never gotten this sort of gas mileage.

I do understand I usually drive like a bat out of hell, but heck I always thought there was something wrong with this car I expected like 15 and 22 the way I drive but I got shown and by my car. during the last two tanks before this mind u (14 and 15 mpg total with about 20% -30% freeway) I had dumped in to fuel injector treatments, but when I had filled just after this problem started (fan) I had an MPG around 14.
However here comes the wierdest part I did some math and in order to come anywhere near the city/freeway split I must have driven on the partial last tank before I filled these are the values I got .


mpg H miles H mpg C miles C
31 91.1 21 42.1
32 85.5 21 47.7
28 102 24 31.2
28 89.8 25 43.4
29 94.3 23 38.9

in anyway to make sense considering what I drove I got better than EPA H:28 F:21 values on either one or both of the parts (high/city). I just want to because I found out that I could have been saving lots of money over the last year

What is the max u guys get on four bangers with auto tranny's (al4d) and does my watching the shift dots on the odometer and the smooth acceleration (barley touching the pedel) really make that much difference?

Shameful
terramir